OZONE LAYER REDUCTION
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What is the Ozone Layer?
How the ozone is harmed
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the ozone layer was discovered in 1913. Since then people have doubted the possibility of a giant hole being teared open in our atmosphere or the fear of our ozone layer DISAPPEARING ... but in 1973 research collected data and confirmed this is absolutely true! this is called
OZONE depletion.
you can also check these similar sites out
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HTTP://OZONEWATCH.GSFC.NASA.GOV/FACTS/HOLE.HTML
http://www.theozonehole.com/
http://environment.nationalgeographic.com/.../ozone-depletion-overview/