what is pulution
exams on 25 november
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Pollution is the introduction of harmful materials into the environment. These harmful materials are called pollutants. Pollutants can be natural, such as volcanic ash. They can also be created by human activity, such as trash or runoff produced by factories. Pollutants damage the quality of air, water, and land.
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Pollution is one of the biggest problem. of planet earth. During pollution it's also effect on our health just like heart,lungs,eye etc..
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