Question

which of the following is not true about of the action of cfcs (chlorofluorocarbons) in our atmosphere? a. cfcs contribute to the greenhouse effect in our atmosphere. b. cfcs are harmful human - made components in the atmosphere. c. cfcs break down ozone in our upper atmosphere. d. cfcs are naturally occurring components of our atmosphere.

Explanation:

CFCs (chlorofluorocarbons) are man - made compounds, not naturally occurring components of the atmosphere. They contribute to the greenhouse effect, are harmful to the atmosphere, and break down ozone in the upper atmosphere.

Answer:

D. CFCs are naturally occurring components of our atmosphere.