The residue left after methane production from cattle dung is:
a. burnt

b. buried in landfills

c. used as manure

d. used in civil construction.
The residue left after methane production from cattle dung is:
a. burnt

b. buried in landfills

c. used as manure

d. used in civil construction.

Solution:

Option (c) is the answer

Because it provides certain organic compounds and minerals to the soil, the residue remaining after methane production from calf dung is used as manure.

As a result, the right response is ‘used as manure.’