men
100%. All of the oxygen that I breathe comes from the air! The answer that you were probably after, but did not ask, was about the percentage of oxygen in the air that we breathe. The questions may sound similar but they are not the same. The answer is a little over 20%.
The common term for what we breathe in is air.
The Lower Explosive Limit (LEL) of natural gas (which is primarily methane). is 5% by volume in air. The Upper Explosive Limit (UEL) is 15% by volume in air
Oxygen
because we breathe in the oxygen which is flowing around this earth and when we breathe in this oxygen around us ,we also breathe in air pollution which is not good for all things living on this planet.
78.09% Nitrogen by Volume (approx)
oxygen is 20% of the air you breathe
About 78%.
about 21%
Air
It is a gas.
Gas
21%
It is a gas.
The air you breathe is a gas which is one of the four physical states of matter.
Nitrogen
It doesn't matter that you can't see the air you breathe. Oxygen is gas, gas is a form of matter. So, air is matter.