Search results for: "cholera"


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BACTERIA

Darkprince540

Bacteria are microorganism. They are so small to see with naked eye. In order to see them electron microscope is used. Bacteria are……

by Darkprince540

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POLLUTION

Sharafat Sheikh

POLLUTION Word Pollution which meaning, the adding of some constituents to air, water or land which harmfully alters the usual excellence……

by sharafat-sheikh

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