why factory wastes should be treated before they are let out in water bodies
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Because factory waste contains toxic elements which is harmful for human beings, animals and plants as well. Thus, it is necessary to treat factory waste before letting it out in water bodies.
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Because these wastes contains harmful chemicals which contaminates the water bodies and disturbs the aquatic fauna .
Even hot water is a contaminant of water bodies as they affect the life of fishes and other water animals .
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Even hot water is a contaminant of water bodies as they affect the life of fishes and other water animals .
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