Question

The human bodies main source of energy comes from

Answer 1

It comes from many things such as food, oxygen but the main source id carbohydrates. your body needs this to function 

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Answer 2

The primary sources of energy for the human body and always will be carbohydrates. Carbohydrates actually aren't the primary but rather glucose within which is then processed into usable energy to the body called ATP.

If the body is unable to process glucase it will then begin to metabolize fat.