Which gas is primarily responsible for the depletion of the ozone layer?
A
Carbon dioxide
B
Chlorofluorocarbons
C
Methane
D
Nitrogen
Correct Answer: Option B — Chlorofluorocarbons
Explanation:
Chlorofluorocarbons, commonly known as CFCs, are primarily responsible for ozone layer depletion. When exposed to UV radiation, they release chlorine atoms that catalytically destroy ozone molecules in the stratosphere over time.