Question

Why do you need to breathe? Why do you need to take in air?

Answer 1

Answer:

Everyday functions of the body like digesting your food, moving your muscles or even just thinking, need oxygen. When these processes happen, a gas called carbon dioxide is produced as a waste product. The job of your lungs is to provide your body with oxygen and to get rid of the waste gas, carbon dioxide.

Answer 2

Answer:

we need air to breathe. we need oxygen to take in air.