Yes. The air we breathe every day is 21% oxygen.
The percent of oxygen in dry air is approximately 21%.
Oxygen makes up 21 percent of the air by volume.
Roughly 21% of the air we breathe is oxygen. Nitrogen makes up about 78% of the air, with the remaining 1% composed of various other gases.
oxygen! There is 21 percent oxygen in inspired ( the stuff you breath in) air and 13 percent in expired(the stuff you breath out)
21 percent.
This is the composition of the air.
Air typically contains about 21% oxygen by volume.
Oxygen makes up about 21% of the air we breathe.
oxygen
Oxygen is approximately 21% of the air we breathe.
There is approximately 21 % oxygen in our air.
Oxygen typically makes up about 21% of Earth's atmosphere by volume.