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(D) The presence of $CFCs$ (chlorofluorocarbons) in the atmosphere is the primary cause of ozone layer depletion in the stratosphere. $CFCs$ are relea

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$CFCs$

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(D) The presence of $CFCs$ (chlorofluorocarbons) in the atmosphere is the primary cause of ozone layer depletion in the stratosphere. $CFCs$ are released from refrigerators,air conditioners,and aerosol sprays. In the stratosphere,$CFCs$ break down under $UV$ radiation to release chlorine radicals $(Cl^{\bullet})$,which catalyze the decomposition of ozone $(O_3)$ into oxygen $(O_2)$. This depletion leads to the formation of an 'ozone hole',allowing harmful $UV$ radiation to reach the Earth's surface.

List-$I$	List-$II$
$(A)$ $< 1 \ ppm$	$(i)$ Harmful to bones
$(B)$ $> 2 \ ppm$	$(ii)$ Tooth decay
$(C)$ $> 10 \ ppm$	$(iii)$ Brown mottling of teeth

Ozone depletion in the stratosphere is mainly caused by

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