Rags to Riches: Answer questions in a quest for fame and fortune.

Chpt.13 - Air Pollution

>About some common air pollutants - sulphur dioxide, carbon monoxide, oxides of nitrogen, chloroflurocarbons(CFCs) and lead compounds.
>to recongnise the sources of the common air pollutants.
>about the harmful effects of the pollutants to living things and the environment.
>The measures to control air pollution
*>the effects of human activities on the changing composition of air which leads to environment threats
*>the greenhouse effect and global warming, thinning of the ozone layer and acid rain

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