Question

what is a food? why we eat food?

Answer 1

Heya!
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As according to the English dictionary,
any nutritious substance that people or animals eat or drink, or that plants absorb, in order to maintain life and growth.
Just as a power station requires gas or coal to power its turbines and generate energy, so we need fuel – in the form of food – to power our continued existence. The foods we eat provide us with a range of nutrients: vitamins, minerals, water, fat, carbohydrates, fibre, and protein.That's why we need to eat food.
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Hope it helps you!

Answer 2

$\bold{Food}$

Food is basically a nutrition rich substance which living organism consume in order to fill the daily requirements and necessities.

We eat food in order to complete our daily requirements.
The basic components of food are carbohydrates, fats, proteins, vitamins and minerals, roughage, water.
food provides energy to carry out all processes. It also helps in growth.
Human beings and animals get their food from the plants (like- Spinach , Lettuce) and smaller animals (like- Fish).