Fats and carbohydrates perform an energy function in the body and are reserve nutrients. Why do animals and humans store fats

Fats and carbohydrates perform an energy function in the body and are reserve nutrients. Why do animals and humans store fats, not carbohydrates? Why do plants store both fats and carbohydrates?

Lipid is the main source of metabolic water formation, since the oxidation of 1 g of fat gives about 1.5 g of water. And with the oxidation of 1 g of carbohydrate, only 1 molecule of water. Metabolic water is very important for some desert inhabitants, in particular for camels that can do without water for 10-12 days: the fat stored in the hump is used for these purposes. Bears, marmots, and other hibernating animals, which are necessary for life, are obtained as a result of fat oxidation. Fats are the most high-calorie, so when it is important to be at least somewhat active, this ensures minimal weight. Starch-infested birds simply could not fly. When the plant is important minimum weight, it also stores fats. For example, in seeds.

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