True: A candle produces heat., If we rub our hands, it gives off heat., We use heat for cooking., The sun gives us heat., Fire is natural heat., Heat is measured in calories, Heat is measured in BTU's, Heat is a form of energy, A radiator produces artificial heat., False: A book produces heat., A table produces heat., The Sun produces artificial heat., A box produces heat, Electricity is natural heat., Heat is measured in centimeters, Heat is measured in kilograms, Heat is a food., A candle is natural heat.,

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