which of the following is the main source of energy for the human body?

Question

chemical energy
mechanical energy
electrical energy
thermal energy

Answer 1

Chemical Energy. Your body gets chemical energy by breaking down simple sugars (when you split bonds between strings of elements you get energy) In more depth you get more energy from complex sugars because it takes more breakdowns which in turn means more energy.

Answer 2

Chemical energy. The body converts any food used for energy into sugars.

Answer 3

chemical energy from food

Answer 4

it's thermal energy