Oxygen makes uo 20% of the air we breath.
Nitrogen constitutes 79% of the air we breathe. Oxygen accounts for about 21% of the atmosphere, while trace gases like argon, carbon dioxide, and others make up the remaining 1%.
oxygen! There is 21 percent oxygen in inspired ( the stuff you breath in) air and 13 percent in expired(the stuff you breath out)
Air is about 79% nitrogen by volume.
Earth
99 percent of air is made up of air pollution from motor vehicles.
20 Percent.
oxygen
Nitrogen forms roughly 78-80 percent of our air.
Oxygen is approximately 21% of the air we breathe.
Nitrogen forms roughly 78-80 percent of our air.
Oxygen
Oxygen
Oxygen
Oxygen is the gas that accounts for about 20 percent of Earth's atmosphere.
Oxygen is a non-metal gas that makes up about 20% of normal air.
It means that only 20% of the humidity of 100% is in the air.
because it gives 20 percent of air to humanbeing to live