div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails1jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails2jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=3Page 3button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=3 data-page=3 class=ts-thumb lazyload alt=Page 3: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails3jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=4Page 4button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=4 data-page=4 class=ts-thumb lazyload alt=Page 4: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails4jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=5Page 5button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=5 data-page=5 class=ts-thumb lazyload alt=Page 5: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails5jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=6Page 6button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=6 data-page=6 class=ts-thumb lazyload alt=Page 6: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails6jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=7Page 7button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=7 data-page=7 class=ts-thumb lazyload alt=Page 7: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails7jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=8Page 8button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=8 data-page=8 class=ts-thumb lazyload alt=Page 8: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails8jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=9Page 9button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=9 data-page=9 class=ts-thumb lazyload alt=Page 9: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails9jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=10Page 10button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=10 data-page=10 class=ts-thumb lazyload alt=Page 10: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails10jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=11Page 11button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=11 data-page=11 class=ts-thumb lazyload alt=Page 11: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails11jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=12Page 12button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=12 data-page=12 class=ts-thumb lazyload alt=Page 12: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails12jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=13Page 13button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=13 data-page=13 class=ts-thumb lazyload alt=Page 13: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails13jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=14Page 14button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=14 data-page=14 class=ts-thumb lazyload alt=Page 14: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails14jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=15Page 15button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=15 data-page=15 class=ts-thumb lazyload alt=Page 15: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails15jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=16Page 16button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=16 data-page=16 class=ts-thumb lazyload alt=Page 16: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails16jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=17Page 17button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=17 data-page=17 class=ts-thumb lazyload alt=Page 17: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails17jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=18Page 18button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=18 data-page=18 class=ts-thumb lazyload alt=Page 18: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails18jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=19Page 19button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=19 data-page=19 class=ts-thumb lazyload alt=Page 19: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails19jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=20Page 20button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=20 data-page=20 class=ts-thumb lazyload alt=Page 20: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails20jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=21Page 21button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=21 data-page=21 class=ts-thumb lazyload alt=Page 21: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails21jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=22Page 22button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=22 data-page=22 class=ts-thumb lazyload alt=Page 22: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails22jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=23Page 23button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=23 data-page=23 class=ts-thumb lazyload alt=Page 23: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails23jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=24Page 24button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=24 data-page=24 class=ts-thumb lazyload alt=Page 24: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails24jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=25Page 25button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=25 data-page=25 class=ts-thumb lazyload alt=Page 25: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails25jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=26Page 26button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=26 data-page=26 class=ts-thumb lazyload alt=Page 26: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails26jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=27Page 27button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=27 data-page=27 class=ts-thumb lazyload alt=Page 27: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails27jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=28Page 28button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=28 data-page=28 class=ts-thumb lazyload alt=Page 28: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails28jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=29Page 29button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=29 data-page=29 class=ts-thumb lazyload alt=Page 29: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails29jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=30Page 30button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=30 data-page=30 class=ts-thumb lazyload alt=Page 30: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails30jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=31Page 31button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=31 data-page=31 class=ts-thumb lazyload alt=Page 31: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails31jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=32Page 32button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=32 data-page=32 class=ts-thumb lazyload alt=Page 32: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails32jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=33Page 33button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=33 data-page=33 class=ts-thumb lazyload alt=Page 33: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails33jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=34Page 34button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=34 data-page=34 class=ts-thumb lazyload alt=Page 34: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails34jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=35Page 35button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=35 data-page=35 class=ts-thumb lazyload alt=Page 35: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails35jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=36Page 36button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=36 data-page=36 class=ts-thumb lazyload alt=Page 36: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails36jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=37Page 37button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=37 data-page=37 class=ts-thumb lazyload alt=Page 37: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails37jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=38Page 38button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=38 data-page=38 class=ts-thumb lazyload alt=Page 38: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails38jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=39Page 39button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=39 data-page=39 class=ts-thumb lazyload alt=Page 39: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails39jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=40Page 40button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=40 data-page=40 class=ts-thumb lazyload alt=Page 40: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails40jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=41Page 41button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=41 data-page=41 class=ts-thumb lazyload alt=Page 41: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails41jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=42Page 42button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=42 data-page=42 class=ts-thumb lazyload alt=Page 42: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails42jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=43Page 43button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=43 data-page=43 class=ts-thumb lazyload alt=Page 43: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails43jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=44Page 44button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=44 data-page=44 class=ts-thumb lazyload alt=Page 44: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails44jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=45Page 45button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=45 data-page=45 class=ts-thumb lazyload alt=Page 45: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails45jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=46Page 46button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=46 data-page=46 class=ts-thumb lazyload alt=Page 46: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails46jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=47Page 47button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=47 data-page=47 class=ts-thumb lazyload alt=Page 47: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails47jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=48Page 48button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=48 data-page=48 class=ts-thumb lazyload alt=Page 48: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails48jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=49Page 49button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=49 data-page=49 class=ts-thumb lazyload alt=Page 49: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails49jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=50Page 50button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=50 data-page=50 class=ts-thumb lazyload alt=Page 50: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails50jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=51Page 51button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=51 data-page=51 class=ts-thumb lazyload alt=Page 51: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails51jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=52Page 52button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=52 data-page=52 class=ts-thumb lazyload alt=Page 52: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails52jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=53Page 53button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=53 data-page=53 class=ts-thumb lazyload alt=Page 53: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails53jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=54Page 54button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=54 data-page=54 class=ts-thumb lazyload alt=Page 54: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails54jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=55Page 55button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=55 data-page=55 class=ts-thumb lazyload alt=Page 55: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails55jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=56Page 56button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=56 data-page=56 class=ts-thumb lazyload alt=Page 56: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails56jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=57Page 57button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=57 data-page=57 class=ts-thumb lazyload alt=Page 57: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails57jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=58Page 58button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=58 data-page=58 class=ts-thumb lazyload alt=Page 58: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails58jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=59Page 59button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=59 data-page=59 class=ts-thumb lazyload alt=Page 59: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails59jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=60Page 60button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=60 data-page=60 class=ts-thumb lazyload alt=Page 60: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails60jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=61Page 61button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=61 data-page=61 class=ts-thumb lazyload alt=Page 61: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails61jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=62Page 62button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=62 data-page=62 class=ts-thumb lazyload alt=Page 62: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails62jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=63Page 63button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=63 data-page=63 class=ts-thumb lazyload alt=Page 63: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails63jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=64Page 64button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=64 data-page=64 class=ts-thumb lazyload alt=Page 64: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails64jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=65Page 65button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=65 data-page=65 class=ts-thumb lazyload alt=Page 65: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails65jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=66Page 66button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=66 data-page=66 class=ts-thumb lazyload alt=Page 66: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails66jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=67Page 67button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=67 data-page=67 class=ts-thumb lazyload alt=Page 67: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails67jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=68Page 68button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=68 data-page=68 class=ts-thumb lazyload alt=Page 68: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails68jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=69Page 69button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=69 data-page=69 class=ts-thumb lazyload alt=Page 69: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails69jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=70Page 70button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=70 data-page=70 class=ts-thumb lazyload alt=Page 70: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails70jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=71Page 71button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=71 data-page=71 class=ts-thumb lazyload alt=Page 71: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails71jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=72Page 72button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=72 data-page=72 class=ts-thumb lazyload alt=Page 72: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails72jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=73Page 73button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=73 data-page=73 class=ts-thumb lazyload alt=Page 73: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails73jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=74Page 74button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=74 data-page=74 class=ts-thumb lazyload alt=Page 74: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails74jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=75Page 75button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=75 data-page=75 class=ts-thumb lazyload alt=Page 75: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails75jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=76Page 76button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=76 data-page=76 class=ts-thumb lazyload alt=Page 76: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails76jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=77Page 77button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=77 data-page=77 class=ts-thumb lazyload alt=Page 77: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails77jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=78Page 78button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=78 data-page=78 class=ts-thumb lazyload alt=Page 78: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails78jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=79Page 79button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=79 data-page=79 class=ts-thumb lazyload alt=Page 79: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails79jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=80Page 80button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=80 data-page=80 class=ts-thumb lazyload alt=Page 80: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails80jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=81Page 81button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=81 data-page=81 class=ts-thumb lazyload alt=Page 81: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails81jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=82Page 82button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=82 data-page=82 class=ts-thumb lazyload alt=Page 82: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails82jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=83Page 83button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=83 data-page=83 class=ts-thumb lazyload alt=Page 83: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails83jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=84Page 84button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=84 data-page=84 class=ts-thumb lazyload alt=Page 84: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails84jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=85Page 85button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=85 data-page=85 class=ts-thumb lazyload alt=Page 85: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails85jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=86Page 86button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=86 data-page=86 class=ts-thumb lazyload alt=Page 86: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails86jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=87Page 87button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=87 data-page=87 class=ts-thumb lazyload alt=Page 87: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails87jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=88Page 88button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=88 data-page=88 class=ts-thumb lazyload alt=Page 88: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails88jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=89Page 89button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=89 data-page=89 class=ts-thumb lazyload alt=Page 89: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails89jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=90Page 90button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=90 data-page=90 class=ts-thumb lazyload alt=Page 90: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails90jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=91Page 91button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=91 data-page=91 class=ts-thumb lazyload alt=Page 91: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails91jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=92Page 92button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=92 data-page=92 class=ts-thumb lazyload alt=Page 92: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails92jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=93Page 93button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=93 data-page=93 class=ts-thumb lazyload alt=Page 93: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails93jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=94Page 94button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=94 data-page=94 class=ts-thumb lazyload alt=Page 94: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails94jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=95Page 95button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=95 data-page=95 class=ts-thumb lazyload alt=Page 95: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails95jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=96Page 96button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=96 data-page=96 class=ts-thumb lazyload alt=Page 96: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails96jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=97Page 97button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=97 data-page=97 class=ts-thumb lazyload alt=Page 97: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails97jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=98Page 98button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=98 data-page=98 class=ts-thumb lazyload alt=Page 98: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails98jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=99Page 99button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=99 data-page=99 class=ts-thumb lazyload alt=Page 99: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails99jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=100Page 100button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=100 data-page=100 class=ts-thumb lazyload alt=Page 100: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails100jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=101Page 101button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=101 data-page=101 class=ts-thumb lazyload alt=Page 101: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails101jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=102Page 102button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=102 data-page=102 class=ts-thumb lazyload alt=Page 102: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails102jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=103Page 103button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=103 data-page=103 class=ts-thumb lazyload alt=Page 103: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails103jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=104Page 104button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=104 data-page=104 class=ts-thumb lazyload alt=Page 104: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails104jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=105Page 105button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=105 data-page=105 class=ts-thumb lazyload alt=Page 105: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails105jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=106Page 106button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=106 data-page=106 class=ts-thumb lazyload alt=Page 106: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails106jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=107Page 107button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=107 data-page=107 class=ts-thumb lazyload alt=Page 107: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails107jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=108Page 108button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=108 data-page=108 class=ts-thumb lazyload alt=Page 108: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails108jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=109Page 109button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=109 data-page=109 class=ts-thumb lazyload alt=Page 109: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails109jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=110Page 110button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=110 data-page=110 class=ts-thumb lazyload alt=Page 110: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails110jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=111Page 111button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=111 data-page=111 class=ts-thumb lazyload alt=Page 111: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails111jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=112Page 112button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=112 data-page=112 class=ts-thumb lazyload alt=Page 112: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails112jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=113Page 113button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=113 data-page=113 class=ts-thumb lazyload alt=Page 113: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails113jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=114Page 114button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=114 data-page=114 class=ts-thumb lazyload alt=Page 114: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails114jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=115Page 115button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=115 data-page=115 class=ts-thumb lazyload alt=Page 115: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails115jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=116Page 116button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=116 data-page=116 class=ts-thumb lazyload alt=Page 116: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails116jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=117Page 117button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=117 data-page=117 class=ts-thumb lazyload alt=Page 117: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails117jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=118Page 118button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=118 data-page=118 class=ts-thumb lazyload alt=Page 118: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails118jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=119Page 119button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=119 data-page=119 class=ts-thumb lazyload alt=Page 119: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails119jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=120Page 120button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=120 data-page=120 class=ts-thumb lazyload alt=Page 120: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails120jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=121Page 121button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=121 data-page=121 class=ts-thumb lazyload alt=Page 121: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails121jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=122Page 122button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=122 data-page=122 class=ts-thumb lazyload alt=Page 122: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails122jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=123Page 123button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=123 data-page=123 class=ts-thumb lazyload alt=Page 123: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails123jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=124Page 124button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=124 data-page=124 class=ts-thumb lazyload alt=Page 124: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails124jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=125Page 125button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=125 data-page=125 class=ts-thumb lazyload alt=Page 125: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails125jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=126Page 126button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=126 data-page=126 class=ts-thumb lazyload alt=Page 126: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails126jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=127Page 127button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=127 data-page=127 class=ts-thumb lazyload alt=Page 127: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails127jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=128Page 128button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=128 data-page=128 class=ts-thumb lazyload alt=Page 128: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails128jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=129Page 129button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=129 data-page=129 class=ts-thumb lazyload alt=Page 129: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails129jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=130Page 130button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=130 data-page=130 class=ts-thumb lazyload alt=Page 130: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails130jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=131Page 131button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=131 data-page=131 class=ts-thumb lazyload alt=Page 131: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails131jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=132Page 132button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=132 data-page=132 class=ts-thumb lazyload alt=Page 132: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails132jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=133Page 133button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=133 data-page=133 class=ts-thumb lazyload alt=Page 133: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails133jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=134Page 134button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=134 data-page=134 class=ts-thumb lazyload alt=Page 134: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails134jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=135Page 135button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=135 data-page=135 class=ts-thumb lazyload alt=Page 135: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails135jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=136Page 136button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=136 data-page=136 class=ts-thumb lazyload alt=Page 136: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails136jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=137Page 137button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=137 data-page=137 class=ts-thumb lazyload alt=Page 137: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails137jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=138Page 138button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=138 data-page=138 class=ts-thumb lazyload alt=Page 138: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails138jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=139Page 139button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=139 data-page=139 class=ts-thumb lazyload alt=Page 139: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails139jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=140Page 140button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=140 data-page=140 class=ts-thumb lazyload alt=Page 140: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails140jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=141Page 141button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=141 data-page=141 class=ts-thumb lazyload alt=Page 141: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails141jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=142Page 142button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=142 data-page=142 class=ts-thumb lazyload alt=Page 142: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails142jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=143Page 143button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=143 data-page=143 class=ts-thumb lazyload alt=Page 143: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails143jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=144Page 144button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=144 data-page=144 class=ts-thumb lazyload alt=Page 144: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails144jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=145Page 145button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=145 data-page=145 class=ts-thumb lazyload alt=Page 145: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails145jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=146Page 146button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=146 data-page=146 class=ts-thumb lazyload alt=Page 146: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails146jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=147Page 147button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=147 data-page=147 class=ts-thumb lazyload alt=Page 147: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails147jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=148Page 148button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=148 data-page=148 class=ts-thumb lazyload alt=Page 148: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails148jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=149Page 149button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=149 data-page=149 class=ts-thumb lazyload alt=Page 149: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails149jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=150Page 150button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=150 data-page=150 class=ts-thumb lazyload alt=Page 150: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails150jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=151Page 151button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=151 data-page=151 class=ts-thumb lazyload alt=Page 151: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails151jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=152Page 152button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=152 data-page=152 class=ts-thumb lazyload alt=Page 152: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails152jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=153Page 153button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=153 data-page=153 class=ts-thumb lazyload alt=Page 153: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails153jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=154Page 154button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=154 data-page=154 class=ts-thumb lazyload alt=Page 154: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails154jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=155Page 155button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=155 data-page=155 class=ts-thumb lazyload alt=Page 155: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails155jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=156Page 156button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=156 data-page=156 class=ts-thumb lazyload alt=Page 156: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails156jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=157Page 157button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=157 data-page=157 class=ts-thumb lazyload alt=Page 157: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails157jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=158Page 158button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=158 data-page=158 class=ts-thumb lazyload alt=Page 158: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails158jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=159Page 159button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=159 data-page=159 class=ts-thumb lazyload alt=Page 159: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails159jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=160Page 160button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=160 data-page=160 class=ts-thumb lazyload alt=Page 160: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails160jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=161Page 161button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=161 data-page=161 class=ts-thumb lazyload alt=Page 161: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails161jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=162Page 162button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=162 data-page=162 class=ts-thumb lazyload alt=Page 162: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails162jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=163Page 163button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=163 data-page=163 class=ts-thumb lazyload alt=Page 163: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails163jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=164Page 164button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=164 data-page=164 class=ts-thumb lazyload alt=Page 164: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails164jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=165Page 165button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=165 data-page=165 class=ts-thumb lazyload alt=Page 165: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails165jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=166Page 166button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=166 data-page=166 class=ts-thumb lazyload alt=Page 166: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails166jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=167Page 167button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=167 data-page=167 class=ts-thumb lazyload alt=Page 167: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails167jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=168Page 168button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=168 data-page=168 class=ts-thumb lazyload alt=Page 168: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails168jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=169Page 169button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=169 data-page=169 class=ts-thumb lazyload alt=Page 169: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails169jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=170Page 170button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=170 data-page=170 class=ts-thumb lazyload alt=Page 170: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails170jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=171Page 171button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=171 data-page=171 class=ts-thumb lazyload alt=Page 171: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails171jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=172Page 172button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=172 data-page=172 class=ts-thumb lazyload alt=Page 172: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails172jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=173Page 173button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=173 data-page=173 class=ts-thumb lazyload alt=Page 173: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails173jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=174Page 174button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=174 data-page=174 class=ts-thumb lazyload alt=Page 174: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails174jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=175Page 175button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=175 data-page=175 class=ts-thumb lazyload alt=Page 175: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails175jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=176Page 176button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=176 data-page=176 class=ts-thumb lazyload alt=Page 176: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails176jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=177Page 177button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=177 data-page=177 class=ts-thumb lazyload alt=Page 177: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails177jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=178Page 178button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=178 data-page=178 class=ts-thumb lazyload alt=Page 178: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails178jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=179Page 179button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=179 data-page=179 class=ts-thumb lazyload alt=Page 179: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails179jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=180Page 180button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=180 data-page=180 class=ts-thumb lazyload alt=Page 180: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails180jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=181Page 181button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=181 data-page=181 class=ts-thumb lazyload alt=Page 181: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails181jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=182Page 182button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=182 data-page=182 class=ts-thumb lazyload alt=Page 182: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails182jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=183Page 183button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=183 data-page=183 class=ts-thumb lazyload alt=Page 183: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails183jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=184Page 184button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=184 data-page=184 class=ts-thumb lazyload alt=Page 184: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails184jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=185Page 185button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=185 data-page=185 class=ts-thumb lazyload alt=Page 185: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails185jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=186Page 186button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=186 data-page=186 class=ts-thumb lazyload alt=Page 186: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails186jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=187Page 187button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=187 data-page=187 class=ts-thumb lazyload alt=Page 187: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails187jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=188Page 188button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=188 data-page=188 class=ts-thumb lazyload alt=Page 188: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails188jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=189Page 189button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=189 data-page=189 class=ts-thumb lazyload alt=Page 189: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails189jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=190Page 190button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=190 data-page=190 class=ts-thumb lazyload alt=Page 190: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails190jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=191Page 191button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=191 data-page=191 class=ts-thumb lazyload alt=Page 191: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails191jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=192Page 192button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=192 data-page=192 class=ts-thumb lazyload alt=Page 192: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails192jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=193Page 193button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=193 data-page=193 class=ts-thumb lazyload alt=Page 193: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails193jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=194Page 194button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=194 data-page=194 class=ts-thumb lazyload alt=Page 194: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails194jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=195Page 195button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=195 data-page=195 class=ts-thumb lazyload alt=Page 195: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails195jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=196Page 196button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=196 data-page=196 class=ts-thumb lazyload alt=Page 196: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails196jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=197Page 197button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=197 data-page=197 class=ts-thumb lazyload alt=Page 197: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails197jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=198Page 198button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=198 data-page=198 class=ts-thumb lazyload alt=Page 198: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails198jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=199Page 199button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=199 data-page=199 class=ts-thumb lazyload alt=Page 199: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails199jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=200Page 200button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=200 data-page=200 class=ts-thumb lazyload alt=Page 200: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails200jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=201Page 201button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=201 data-page=201 class=ts-thumb lazyload alt=Page 201: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails201jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=202Page 202button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=202 data-page=202 class=ts-thumb lazyload alt=Page 202: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails202jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=203Page 203button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=203 data-page=203 class=ts-thumb lazyload alt=Page 203: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails203jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=204Page 204button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=204 data-page=204 class=ts-thumb lazyload alt=Page 204: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails204jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=205Page 205button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=205 data-page=205 class=ts-thumb lazyload alt=Page 205: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails205jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=206Page 206button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=206 data-page=206 class=ts-thumb lazyload alt=Page 206: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails206jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=207Page 207button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=207 data-page=207 class=ts-thumb lazyload alt=Page 207: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails207jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=208Page 208button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=208 data-page=208 class=ts-thumb lazyload alt=Page 208: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails208jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=209Page 209button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=209 data-page=209 class=ts-thumb lazyload alt=Page 209: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails209jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=210Page 210button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=210 data-page=210 class=ts-thumb lazyload alt=Page 210: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails210jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=211Page 211button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=211 data-page=211 class=ts-thumb lazyload alt=Page 211: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails211jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=212Page 212button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=212 data-page=212 class=ts-thumb lazyload alt=Page 212: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails212jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=213Page 213button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=213 data-page=213 class=ts-thumb lazyload alt=Page 213: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails213jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=214Page 214button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=214 data-page=214 class=ts-thumb lazyload alt=Page 214: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails214jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=215Page 215button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=215 data-page=215 class=ts-thumb lazyload alt=Page 215: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails215jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=216Page 216button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=216 data-page=216 class=ts-thumb lazyload alt=Page 216: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails216jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=217Page 217button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=217 data-page=217 class=ts-thumb lazyload alt=Page 217: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails217jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=218Page 218button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=218 data-page=218 class=ts-thumb lazyload alt=Page 218: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails218jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=219Page 219button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=219 data-page=219 class=ts-thumb lazyload alt=Page 219: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails219jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=220Page 220button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=220 data-page=220 class=ts-thumb lazyload alt=Page 220: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails220jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=221Page 221button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=221 data-page=221 class=ts-thumb lazyload alt=Page 221: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails221jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=222Page 222button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=222 data-page=222 class=ts-thumb lazyload alt=Page 222: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails222jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=223Page 223button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=223 data-page=223 class=ts-thumb lazyload alt=Page 223: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails223jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=224Page 224button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=224 data-page=224 class=ts-thumb lazyload alt=Page 224: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails224jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=225Page 225button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=225 data-page=225 class=ts-thumb lazyload alt=Page 225: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails225jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=226Page 226button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=226 data-page=226 class=ts-thumb lazyload alt=Page 226: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails226jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=227Page 227button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=227 data-page=227 class=ts-thumb lazyload alt=Page 227: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails227jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=228Page 228button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=228 data-page=228 class=ts-thumb lazyload alt=Page 228: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails228jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=229Page 229button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=229 data-page=229 class=ts-thumb lazyload alt=Page 229: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails229jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=230Page 230button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=230 data-page=230 class=ts-thumb lazyload alt=Page 230: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails230jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=231Page 231button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=231 data-page=231 class=ts-thumb lazyload alt=Page 231: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails231jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=232Page 232button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=232 data-page=232 class=ts-thumb lazyload alt=Page 232: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails232jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=233Page 233button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=233 data-page=233 class=ts-thumb lazyload alt=Page 233: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails233jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=234Page 234button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=234 data-page=234 class=ts-thumb lazyload alt=Page 234: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails234jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=235Page 235button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=235 data-page=235 class=ts-thumb lazyload alt=Page 235: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails235jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=236Page 236button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=236 data-page=236 class=ts-thumb lazyload alt=Page 236: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails236jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=237Page 237button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=237 data-page=237 class=ts-thumb lazyload alt=Page 237: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails237jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=238Page 238button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=238 data-page=238 class=ts-thumb lazyload alt=Page 238: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails238jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=239Page 239button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=239 data-page=239 class=ts-thumb lazyload alt=Page 239: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails239jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=240Page 240button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=240 data-page=240 class=ts-thumb lazyload alt=Page 240: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails240jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=241Page 241button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=241 data-page=241 class=ts-thumb lazyload alt=Page 241: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails241jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=242Page 242button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=242 data-page=242 class=ts-thumb lazyload alt=Page 242: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails242jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=243Page 243button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=243 data-page=243 class=ts-thumb lazyload alt=Page 243: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails243jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=244Page 244button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=244 data-page=244 class=ts-thumb lazyload alt=Page 244: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails244jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=245Page 245button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=245 data-page=245 class=ts-thumb lazyload alt=Page 245: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails245jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=246Page 246button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=246 data-page=246 class=ts-thumb lazyload alt=Page 246: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails246jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=247Page 247button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=247 data-page=247 class=ts-thumb lazyload alt=Page 247: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails247jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=248Page 248button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=248 data-page=248 class=ts-thumb lazyload alt=Page 248: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails248jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=249Page 249button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=249 data-page=249 class=ts-thumb lazyload alt=Page 249: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails249jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=250Page 250button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=250 data-page=250 class=ts-thumb lazyload alt=Page 250: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails250jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=251Page 251button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=251 data-page=251 class=ts-thumb lazyload alt=Page 251: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails251jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=252Page 252button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=252 data-page=252 class=ts-thumb lazyload alt=Page 252: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails252jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=253Page 253button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=253 data-page=253 class=ts-thumb lazyload alt=Page 253: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails253jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=254Page 254button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=254 data-page=254 class=ts-thumb lazyload alt=Page 254: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails254jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=255Page 255button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=255 data-page=255 class=ts-thumb lazyload alt=Page 255: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails255jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=256Page 256button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=256 data-page=256 class=ts-thumb lazyload alt=Page 256: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails256jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=257Page 257button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=257 data-page=257 class=ts-thumb lazyload alt=Page 257: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails257jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=258Page 258button div class=ts-imageimg data-url=cambridge-international-biology-5584af70e8fcehtmlpage=258 data-page=258 class=ts-thumb lazyload alt=Page 258: Cambridge international biology loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220513225453722faf7959927c8b8016html5thumbnails258jpg width=140 height=200 divdiv
