What do we exhale when breathing?

sorry thats so retarted ha

Answer #1

actually contrary to popular belief, when you inhale air, not all of the oxygen is used up and turned into carbondioxide (ok this is rough numbers) Air from the atmosphere N2= 78% O2=21% CO2=0.04% other gases = rest of it

Exhaled air N2=75% O2=14% CO2=5%

Answer #2

thanks! dies of embarrasment

Answer #3

to let out the minerals we dont need such as CO2

Answer #4

carbon dioxide co2

Answer #5

carbon deoxide Co2

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