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I am sorry for reporting it bt you have choosen a wrong subject
pls don't report the questions if the subject is mentioned wrong because we can understand the questions and can help the answering ..thanks


pollution is the contamination of natural resources such as air..water ..and land through undesirable substances either biologically or chemically....some common pollutions are air pollution..water pollution etc
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The presence in or introduction into the environment of a substance which has harmful or poisonous effects.example throwing the waste papers ,rappers etc into the rivers or oceans ,seas etc are called as water pollution .
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