Answer:
It is
advantageous to convert bio-mass into a bio-gas rather than burning bio-mass
directly because of the following reasons
(i) Heating capacity of bio-gas is more than that of bio-mass.
(ii) Bio-gas produces lesser pollution as compared to bio-mass. (1+1)
The
vegetation which is submerged, rots in anaerobic condition and gives out large
amount of methane in nature which is a
greenhouse gas. (2)
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