Transcription: Naturally occurring forms of energy are harnessed and converted into usable power. The force of flowing water was one of the first energy sources to be utilized by humans. For centuries, people have constructed windmills to harness the natural energy of the wind. Wind energy can be converted directly into work, such as milling grain and pumping water, or converted into electricity for use elsewhere. Fossil fuels, such as coal, can be recovered from the earth and burned to create energy. The energy of the Sun can be collected by giant generators or with smaller panels and used to power anything ...
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