Answer:
The
three energy sources that are considered to be inexhaustible are
(i) Sun It will continue to radiate energy at the present rate for
another five billion years.
(ii) Bio-mass Since bio-mass is produced in a short span
of time, therefore, it is considered as inexhaustible.
(iii) Flowing water Hydroelectricity can be produced by storing
the flowing water in a reservoir and allow it to fall from a height on the
turbine blades to turn it. (1x3)
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