what is heat????????.?....
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Heat describes the transfer of thermal energy between molecules within a system.
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Heat is fined as the flow of energy from a warm to a cooler object.
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Heat is measured in Joules.
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the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.
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