What is the difference between the air we breathe in and the air we breathe out?

Air is a mixture of gases, but when a person exhales air, it contains a large amount of oxygen. And when you exhale, air is already processed by the lungs with a large amount of carbon dioxide. In other words: when inhaling, the air is enriched with oxygen, and when exhaling, the amount of oxygen is very small, but the amount of carbon dioxide increases.

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