Answer :

Final answer:

Carbohydrates, proteins, and lipids are the body's main sources of nutrient energy.


Explanation:

Carbohydrates, proteins, and lipids are the body's main sources of nutrient energy. Carbohydrates are converted to glucose for energy, proteins serve as building blocks and a fuel source, while lipids provide high energy density. These macronutrients are essential for cellular functions and energy production.


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