How do proteins and fats provide energy for the human body?

Explanation:

If a body is a machine then food is a fuel. Fats ,carbohydrates and proteins in food provide energy for body functions and physical activities.Fat produces more than two times energy per gram than proteins or carbohydrates.Metabolism in the body converts carbohydrates,proteins and fat into energy.

answer; training;

the answer for the 1st question is kayaking.

the answer for the 2nd question is communication skills.

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