Ques. Which one of the following gases contributes maximum to the ‘greenhouse effect’ on the earth?
A. Carbon dioxide
B. Chlorofluorocarbon
C. Freon
D. Methane
Answer:A
Ques. Which one of the following gases contributes maximum to the ‘greenhouse effect’ on the earth?
A. Carbon dioxide B. Chlorofluorocarbon C. Freon D. Methane