Does your body lose or gain thermal energy is your body temperature is 37 c and the temperature around you is 25 c

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .

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Ok, so i have 2 questions. try to answer them both: (the topic is fire) 1) how can you represent the chemical reaction of fire? 2) what kind of bond is formed in this chemical reaction