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the definition of energy is the ability to do work. For instance a calorie's ( not to be confused with Calorie which is 1000 times greater than calorie) is the amount of heat or energy needed in order to raise the temp of one gram of water up by one degree Celsius. The campfire releases energy through heat. It also uses energy by feeding off of the oxygen and wood as it's energy suppliers. With out those there would be no fire.

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15y ago

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