coal and petroleum

Fossil fuels, like, coal, lignite, petroleum and natural gas are non renewable natural resource..

Coal and Petroleum..

Coal and Petroleum..

Coal and Petroleum..

Coal and Petroleum..

Coal and Petroleum..

Man's quest for sources of energy is inexhaustible. Early man depended mainly on muscular energy and later began to use wind and flowing water as sources of energy. He learned the art of making and controlling fire. Fire became his source of light at night. He used fire for warmth and realize..

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