Major green house gases - Environmental ecology and Climate Change

Q.  Which of the following are major green house gases?

1. Water vapor
2. Carbon dioxide
3. Methane
4. Nitrous oxide
5. Ozone
6. Nitrogen
7. Oxygen

- Published on 05 Jun 15

a. 1,3,4,5,6
b. 2,3,5,6
c. 2,3,4,5,7
d. 1,2,3,4,5

ANSWER: 1,2,3,4,5
To be greenhouse gas the molecule must have a strong absorbence in the IR frequencies of light. Neither oxygen or nitrogen (the major gases in the atmosphere) have this characteristic.

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