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Originally Posted by Hippikos
CFCs/halocarbons are inert, so they can't react with ozone.
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Not in heavy UV light they aren't.
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Has anyone asked him/herself why there's only a hole over Antarctica, when halocarbons were released all over the world?
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Weather patterns. You might as well ask why water collects in puddles, when the rain coats an area evenly.
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Besides ozone is a lousy UV filter, oxygen and nitrogen filter 99%, ozone: 0,000003%.
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It's a bad UV-A filter, a good UV-B filter, and an excellent UV-C filter.