Detailed explanation and options for the selected question.
Which gas is primarily responsible for the depletion of the ozone layer?
A.
Carbon dioxide
B.
Methane
C.
Chlorofluorocarbons
D.
Sulfur dioxide
Explanation:
Chlorofluorocarbons (CFCs) are the main contributors to ozone layer depletion. Carbon dioxide, methane, and sulfur dioxide are unrelated to this process.