Here's how it works:

* Food contains nutrients: These include carbohydrates, proteins, fats, vitamins, and minerals.

* Digestion breaks down food: This process turns complex food molecules into simpler ones that the body can absorb.

* Nutrients are absorbed: The body absorbs these nutrients into the bloodstream.

* Cells use nutrients: Cells use the absorbed nutrients for various functions:

* Growth: Building new cells and tissues.

* Repair: Replacing damaged or worn-out cells and tissues.

* Energy: Fueling all bodily processes like movement, breathing, and thinking.

So, in short, animals eat food, digest it, and use the nutrients for growth, repair, and energy.