➡When we breathe in, it has a higher concentration of oxygen but when we breathe out, it gas a higher concentration of carbon dioxide.

Therefore, The air that we breathe out has a different composition than the air we breathe in.

Hope it helps you ✌✌

Hey BuddY !!

The air we breathe in has a greater amount of Oxygen in it and the air we breathe out has a greater amount of Carbon dioxide present in it.

Also,

The air we breathe in has a lower content Of Water vapours whereas the air we breathe out has a higher content of Water vapours/moisture.

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Wait, is he Captain America ?? ↓↓↓