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The largest ozone hole is above the Antarctic. It is almost as large as continental United States. Antarctic winters are very, very cold. When ice freezes in the air, the crystals are formed. This helps chlorine attack ozone molecules. Then, in the spring, the sun's ultra-violet rays break up the CFCs (ChloroFluoroCarbons) and making even more chlorine. Thus, the ozone is completely gone. But, the ozone levels are known to increase in the summertime.

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13y ago

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