Question

how do chlorofluorocarbons cause depletion of ozone layer

Answer 1

CFC can affect the o3(ozone)by a chemical reaction

Answer 2

Because of their relative stability,CFCs rise into the stratosphere where they are eventually broken down by ultraviolet (UV) rays from the Sun. This causes them to release free chlorine. The chlorine reacts with oxygen which leads to the chemical process of destroying ozone
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