ious problem . lots of plants trees corps are

　　destroyed　by bad air .many fish die of poisonous water . thousands

　　of people die from eating poisoned fish or breathing in gas . therefore ,

　　environmental pollution should be responsible for these diseases

　　that are disabling ,or bringing death not only to human beings ,

　　but also to wild life .)

　　from above ,we can find that the reasons why (environment are polluted

　　more and more seriously) are as follows.

　　　the primary reason ,i think , is (the reason of harmful substances into

　　environment . for example ,to prevent insects ,farmers make use of great

　　amounts of insecticides, so as to have bumper harvests . however ,they

　　pollute air ,water and land ).

　　second,(the gas coming from the car engines and factories also make

　　environment polluted badly ).

　　the third reason actually is (the result of a growing population in

　　the world .

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