a) Why breaking down of ozone gas into oxygen is a chemical change?
b) Give any two uses of ozone layer.
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a) as new substances are formed
b) the Ozone Layer absorbs ultraviolet radiation rays and prevents them from coming to the surface of the earth thus saving the human being from harmful rays
b) the Ozone Layer absorbs ultraviolet radiation rays and prevents them from coming to the surface of the earth thus saving the human being from harmful rays
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