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air is made up of some gases. i.e. it's made up of hydrogen, nitrogen, and mixture of other gases. but the most common is it is made up of nitrogen-78%, oxygen-21%, and other gases-1%air is made up of different gases such as oxygen, carbondioxide, nitrogen and noble gases.
The respiration system adopts to the surface area to volume ratio to help the exchange of gases.
The ratio is approxNitrogen : Oxygen : Argon : Carbon Dioxide :: 39000 : 10500 : 465 : 19.
yes bar is a measure of pressure which doesnt change for different gases
The ratio is approx 268 to 1000.