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chap 13
| Question | Answer |
|---|---|
| climate | the average weather conditions in an area over a long period of time c |
| latatude | the distance north or south from the equator l |
| El Nino | the warm phase of the El Nino- southern oscillation E |
| La Nina | the cool phase of the El Nino-southern oscillation L |
| ozone layer | the layer of the atmosphere at an altitude of 15 to 40 km in which ozone absorbs o |
| chlorofluorohydrocarbons | hydrocarbons in which some or all of the hydrogen=en atoms are replaced cs |
| ozone hole | a thinning off stratospheric ozone |
| polar stratoaspheric clouds | a cloud that forms at altitudes of about 21,000 m p |
| green house gases | a gas composed of molecules that absorb from the sun gs |
| global warming | a gradual increase in average global temperature g |
| Kyoto protocol | an international treaty according to which developed countries that signed a treaty agree to k |