div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: 6-8 Principle 1 10-09Earths crust During various times in Earths geologic history all of the continents have been joined into one super continent A giant ocean circulated src=https:reader036vdocumentinreader036viewer20220708215f2362723c89076c6b1f4360html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdiv