Answer:
(i) Biomass 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 biomass can be obtained by using a chulha or agobargas plant
whereas hydroelectricity requires construction of dams on rivers.
(iii)
Biomass provides pollution-free energy only when converted into biogas whereas
hydroelectricity is totally pollution-free.
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