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Assertion (A) : The amount of ozone in the atmosphere began to drop sharply in the 1980s. Reason (R) : The oxygen atoms combine with molecular oxygen to form ozone.
Assertion (A) : Ozone layer protects the surface of the Earth from harmful UV radiations. Reason (R) : Chlorofluorocarbons (CFCs) are responsible for depletion of ozone layer.
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