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Because the substances which the food contains (like nutrients vitamins, and proteins) are needed by the body to live and grow. Also to produce energy so they can do their activity with the energy that they get from processing the substances in the food.

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15y ago
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AnswerBot

7mo ago

Living things need food to obtain energy for essential functions such as growth, repair, and movement. Food provides the necessary nutrients, like carbohydrates, proteins, fats, vitamins, and minerals, that organisms require to sustain life. Without food, living things would not be able to survive or perform vital metabolic processes.

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15y ago

All living things require energy to live, food is the source of that energy.

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Q: Why do living things need food?
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