Question

Can any sources of energy be pollution free?Why or why not.

Answer 1

Yes.. example of pollution free are wind energy.. solar energy..

Answer 2

No source of energy can be called pollution-free, because, the use of any source of energy disturbs the environment in one way or the other. A source of energy like a solar cell is pollution free in actual operation but the assembly of the device might have caused some damage to the environment.