Discussion
Ozone - layer is getting depleted because of
Answer: C
The ozone layer is depleted by man-made compounds containing both fluorine and chlorine.
Chlorofluorocarbons drift up to the stratosphere, where ultraviolet light frees a chlorine atom that then destroys ozone catalytically: \[\mathrm{Cl + O_3 \rightarrow ClO + O_2},\qquad \mathrm{ClO + O \rightarrow Cl + O_2}\] One chlorine atom can destroy tens of thousands of ozone molecules before it is removed.
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