polythene bags are harmful for environment. why?
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polythene is harmful for environment because when we burn it make so much pollution which is harmful for health
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polythene is a non biodegradable substance and is animal is a cause of air pollution . it can block the respiratory tract of animals if they ingest it . if they are set on fire they releases harmful gases . they can choke the drains if they are thrown. they are a major cause of water pollution and pollution of river bed .
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