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Besidesgivingoffgasesanddustsintotheair,humansproducewa...
问题详情:Besidesgivingoffgasesanddustsintotheair,humansproducewastethatispouredontheenvironment.Often,thiswasteproducedbymajorindustriesandpeopleisharmfultobothnatureandhumanlife.Oneofthemaincausesofth...