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As far as I know,river pollution exist so many places in our country.A great deal of dead fish can be found floating on the surface of the river because of the serious pollution.Besides river pollution,there are also air pollut...

Pollution has been a serious problem for a certain time around the world. There are many causes for it. Transportation is the main factor of pollution. When the waste gas from cars is released, the air is polluted. People breat...



It goes without saying that cars do great harm to our environment.First of all,they need gasoline.When factories produce gasoline,some poinsons are produced too.Secondly,cars themselves release waste


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