Nitrogen makes up about 78% of the air we breathe, with oxygen making up around 21%.
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Nitrogen is the element that makes up approximately 79% of the air we breathe.
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.
The element is nitrogen. It exists as a diatomic gas (N2) and makes up approximately 78% of Earth's atmosphere.
Oxygen makes up 21 percent of the air by volume.
Oxygen is the element that makes up 78% of air and belongs to the 15th group in the periodic table.