For many centuries wind has been used as a reliable source of energy. It is clean and inexhaustible. Wind is used to make the job of a human simpliar. It is used for grinding grain, pumping water, and to enable sail boats to move. Though often the amount of wind power varies depending on the climate of an area. Although wind power is only used in selected areas the recent interest in fuel conservation has …showed first 75 words of 325 total…

…showed last 75 words of 325 total…