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প্রেজেন্টেশন

০৮ জুন, ২০২৪ ০৫:০৬ অপরাহ্ণ

Water Pollution

Water is a vital element of environment. It's essential for humans, birds, plants and animals. The most important cause of water pollution is dumping waste into the water. Mills and factories through garbage and harmful chemicals into water. As a result people are suffering from various diseases. 

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