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Compare and contrast bio-mass and hydro-electricity as sources of energy. |
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Answer» (i) Bio-mass is a renewable source of energy only if we plant trees in a planned manner which is not the case with hydroelectricity. (ii) The energy from bio-mass can be obtained by using a chullah or a gobar gas plant whereas hydroelectricity requires construction of dams on rivers. (iii) Bio-mass provides pollution-free enegry only when converted into biogas whereas hyroelectricity is totally pollution-free. |
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