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Bacteria is used for 5 major reasons. Reason 1- Nitrogen fixing bacteria consume nitrogen in the air and change it into a form that plants can use. Reason2-By breaking down dead organic matter, decomposing bacteria make nutrients available again to living things. Reason3-Recently bacteria have been used to combat pollution. Reason4-Antibiotics are medicines used to kill bacteria and other microoroganisms. Reason5-Sientist have created genetically enginerring bacteria that can produce other medicines such as insulin for diabetics. Reason 6-People breed bacteria for food. The lactics-acid bacteria act as preservations and adds flavor to those foods.

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16y ago

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