Question

Depletion of ozone layer in the upper atmosphere is due to

Answer 1

green house gases like CO2, CFC evolution from earth by human beings.

Answer 2

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Ozone depletion occurs when chlorofluorocarbons (CFCs) and halons—gases formerly found in aerosol spray cans and refrigerants—are released into the atmosphere (see details below). ... CFCs and halons cause chemical reactions that break down ozone molecules, reducing ozone's ultraviolet radiation-absorbing capacity.