Question
Write 10 lines on the usefulness of microorganisms In our lives.

Answer

Microorganisms are useful for the humans and plants in following ways
(i) They are used in preparation of food items such as breads.
(ii) Bacteria are used in the conversion of milk into curd.
(iii) They are used for the large scale production of alcohol, wine and acetic acid.
(iv) A number of medicines such as antibiotics are being produced from bacteria and fungi.
(v) They are used to check microbial infections in animals.
(vi) Vaccines are made by dead or weakened microbes.
(vii) Some bacteria and blue-green algae increase the soil fertility by fixing atmospheric nitrogen.
(viii) They decompose the dead organic wastes of plants and animals.
(ix) They are used in cleaning up of the environment.
(x) Certain microbes are also used in the biological treatment of sewage and industrial effluents.

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