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Mass extinction the result of acid rain and ozone loss

from Chemistry World

Widespread rain as acidic as lemon juice and the destruction of as much as 65 percent of the ozone layer may have played a major role in the largest mass extinction in the fossil record. This conclusion was reached by a U.S. team that used geological samples to develop a climate model that predicted extreme atmospheric effects that could have been behind the mass extinction at the end of the Permian. more

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