We should not pollute rivers & lakes & waste paper.We should also recycle things.Do you know that burning coal emits serious pollutants into the atmosphere?China's 5 years plan is to reduce airborne sulphur dioxide succeeded in cutting down the pollutant by 27%.I'm sure that you know global warming is caused by carbon dioxide.Of all the states in USA, California is most energy efficient state.The responsibility of saving the environment falls on every individual person.
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