Q.can any source of energy be pollution free??give reasons.

Pollution is the term given to bi products of the energy source which are harmful for the environment.There are many souces of energy such as bio mass or wind turbine which are clean fuels as they do not emit any harmful waste. LNG(Liquified Natural gas)is one of the safest fossil fuel beacuse of the minimum CO₂ content in it.There are many hydrogen based pollution free energy sources as well.Solar Energy is another such pollution free source of energy .