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Microbes in Human Welfare

Short Answer Type

61. Define BOD and COD.

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62. Do you think microbes can be used as source of energy ? If yes, how ?

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63. Microbes can be used to lessen the burden of use of chemical pesticides. Explain how this can be accomplished.

Microbes can be used to greatly lessen the excessive use of chemicals and pesticides. Microbes can be used as bio-pesticides like the bacteria Bacillus thuringiensis produces cry proteins which are insecticidal in nature and can be used as an pesticide. In addition the microbes increase the fertility and productivity of soil.

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