Albert Einstein says energy and matter are one. In fact, all life is but an interconversion of matter and energy. Food becomes chemical energy for the muscles, muscles create mechanical energy for machines, machines can produce food, electricity, light, sound energy and others which in turn create other forms of matter and energy. Life on earth is possible only because of the major cycles in the biosphere such as the water cycle that creates climate, carbon and oxygen cycle that makes respirati...
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