The right answer is fats
Macronutrients. With water, they make up about 98% of the diet. Macronutrients provide calories, ie energy (a calorie is a unit of measurement established by estimating the heat released by the oxidation of the food in the body); they also play several other roles.
There are 3 macronutrients: carbohydrates, lipids, and proteins.
Answer:
Humans could perhaps run as fast 40 mph, a new study suggests. Such a feat would leave in the dust the world's fastest runner, Usain Bolt, who has clocked nearly 28 mph in the 100-meter sprint. The new findings come after researchers took a new look at the factors that limit human speed
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