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What do we breathe out? What is the percentage of oxygen and carbon dioxide in our exhaled air?
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What do we breathe out? What is the percentage of oxygen and carbon dioxide in our exhaled air?

User Siddharth Dushantha
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1. We breathe out CARBON DIOXIDE
2. Consequently, we exhale 16% of oxygen and 4% carbon dioxide
User Tmhalbert
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We breathe out carbon dioxide it’s percentage in exhaled air is about 4%-5% by its volume
User Hardmath
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