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How much oxygen does a human need per average breath of air?

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In an average gasp of air, only 15-20% is oxygen. When you exhale you release around 10%. In short, 10% would be the ideal minimum.
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How much oxygen does the human body need?

we need about 20 percent a day 4% 4% Although Earth's atmosphere at sea level contains 21% oxygen by volume the human body only uses about 5% out of the available 21% oxygen

How much oxygen do humans need?

An average person would need 8 liters of air per minute daily.  Depending on the activity that an individual was doing at the time,  the amount of oxygen needed could increa

How much oxygen does an average person need per day?

The average adult at rest inhales and exhales something like 7 or 8 liters (about one-fourth of a cubic foot) of air per minute. That totals something like 11,000 liters of ai

How much air does a human breath?

well they breathe tons of times during the day the average would br about 1,000,000 times a day! The average person at rest will breathe about 15 +/- times per minute meaning

Do you breathe out as much oxygen as you breathe in?

Yes the same amount will leave you as you take in on average but when you breathe out there will be more CO2 and less oxygen as your body uses Oxygen for it's metabolic functi