p1h global warming
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The Ozone layerEarth’s sun-block
The ozone layer• As well as heat and
light, the Sun
produces UV
(______________)
radiation
• UV can be harmful to
us as it can damage
DNA in our _______,
which can cause
________ _________
The ozone layer
3 things that help prevent UV damage to our skin:
The ozone layer• A layer of ozone (O3)
high in the atmosphere absorbs much of the Sun’s harmful ___ radiation
• Chemicals called CFCs destroy ozone meaning that…
Don’t confuse the ozone layer
with what we are about to learn next!!
Global Warming
Which human and natural factors can alter the balance? (p32)