Question

Why we need air To breath only

Answer 1

for oxygen only in the air

Answer 2

Answer:

All cells in our body need oxygen to create energy efficiently. When the cells create energy, however, they make carbon dioxide. We get oxygen by breathing in fresh air, and we remove carbon dioxide from the body by breathing out stale air.

Explanation:

All living things need oxygen. The oxygen reacts (or combines) with food you eat to make energy. ... The reason living things breathe is to get the oxygen they need, and to get rid of carbon dioxide waste. Plants and animals breathe in many different ways.