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IN HUMAN WELFARE

IN HUMAN WELFARE

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(b)Ganga has recently been declared the national river. Discuss the implication with respect to pollution of this river. 3. Draw a diagrammatic sketch of biogas plant, and label its various components given below: Gas Holder, Sludge Chamber, Digester, Dung+water chamber. 4. Describe the main ideas behind the biological control of pests and ...

  River, Human, Welfare, Ganga, In human welfare

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