Question

Why is there a need to harness non-conventional sources of energy? Give two

main reasons.

Answer 1

there is a need to harness nonconventional sources of energy because we can use it many times and it does not get replenished
or exhausted

The main reason is that conventional resources needs a lot of time to build
but non conventional resources like water sun energy can be used
unlimitedly

basically conventional resources are limited but non-conventional resources are unlimited.

nonconventional resources does not harm environment or spread pollution