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Yes.

When you breath, you take in oxygen and breathe out CO2.

According to Wiki Answers (see link), an exhaled breath is about 4% CO2.

Atmospheric CO2 is between 300 and 400 ppm, or 0.03% to 0.04%.

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14y ago

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Do lions breath in carbon dioxide?

As there is a low level of carbon dioxide in the air that animals (and people) breath, yes every breath taken in breaths in some carbon dioxide.But as carbon dioxide in the blood is transferred to the air in the lungs, increasing the level of carbon dioxide in that air, when they breath out both the carbon dioxide breathed in and the additional carbon dioxide from the blood are breathed out. Thus in balance more carbon dioxide is breathed out than is breathed in.


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What does exhaled air contain more of than inhaled air?

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Is there more nitrogen or carbon dioxide in the air?

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Why is there less carbon dioxide breathed out when exercising?

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What is it called when a combination of two or more pure substances that do not combine chemical?

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Why does expired air contain more carbon dioxide than inspired air?

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