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Most of the body's heat results from a. physical exertion. b. the surrounding environment, such as sunlight. c. chemical reactions occurring in cells. d. the activity of the heart.
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Most of the body's heat results from

a. physical exertion.
b. the surrounding environment, such as sunlight.
c. chemical reactions occurring in cells.
d. the activity of the heart.

User Uttam Kamar
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1 Answer

3 votes
Chemical reaction occurring in cells.
Cells use up the food to make energy. Heat is also released during the process...
So, 'chemical reactions occuring in cells' is the right answer.
User LMaker
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