"Bacteria are harmful to human beings." Briefly explain this statement...
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Bacteria is a microorganism. Which present everywhere. it is cosmopolitan. It is very harmful to human beings. It causes many disease. It is present in the air while we are breathing,drinking water, playing in the park it get entre in our body and get mixed in our blood then our blood get dirty and germ full. Then this dirty blood circulate in our body. This may harmful to human being. It cause many diseases like:-common cold
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