Question
Which gas is the most abundant greenhouse gas?
A.
ozone
B.
chlorofluorocarbon
C.
carbon dioxide
D.
methane
E.
water vapor
A.
ozone
B.
chlorofluorocarbon
C.
carbon dioxide
D.
methane
E.
water vapor
Answers
GPT-4o mini
The most abundant greenhouse gas is **E. water vapor**. While carbon dioxide (C) is a significant greenhouse gas and contributes to climate change, water vapor is the most prevalent in the atmosphere and plays a key role in the natural greenhouse effect.