McqMate
| Q. |
Which one of the following group of gases contribute to the "Green House Effect"? |
| A. | Carbon dioxide and Methane |
| B. | Ammonia and Ozone |
| C. | Carbon monoxide and Sulphur dioxide |
| D. | Carbon tetrailouride and Nitrous oxide |
| Answer» A. Carbon dioxide and Methane | |
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Explanation: The primary greenhouse gases in the Earth's atmosphere are water vapour, carbon dioxide, methane, nitrous oxide, and ozone. When ranked by their direct contribution to the greenhouse effect, the most important are: Water vapour and clouds: 36-72 %, Carbon Dioxide: 9- 26 %, Methane: 4-9 % and Ozone: 3-7 %. |
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