Answer:
We are looking at
alternate sources of energy because
(i) the fossil fuel reserves in the Earth are
limited which may get exhausted soon, if continued to be used at the current
rate.
(ii) the
use of alternate sources of energy will reduce the pressure on fossil fuels
making them last for a much longer time.
(iii)
the pollution being caused by the burning of fossil fuels can be avoided by using
alternate sources of energy.
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