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the text page 51acid rain, one of the most serious pollution problems is acid rain. what happens is this. first, factories send gases and chemicals into the air. there they mix and are carried for hundreds of miles by the wind. final ly, they fall back to earth when it rains chemicals acidify rain, acid rain kills fish and trees. it slowly destroys buildings too. the green solution: industrial countries should control their levels of pollution. this is already happening in some parts of europe. there, several countries ("the 30 club") have cut their acid rain pollution by 30%.
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