1. Renewable Energy Source Solar Energy
In the broadest sense, solar energy supports all life on Earth and is the basis for almost every form of energy we use. ... But solar energy usually refers to ways this energy can be used as heat and electricity. ... Part of the sunlight is absorbed in the earth's atmosphere or reflected back into space. ... Solar collectors sit on the rooftops of buildings to collect solar energy for space heating, water heating, and space cooling. ... As the population of the world grows and the standard of living increases, the demand for electrical energy also increases. ...
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