Nitrogen.
Dry air contains roughly (by volume) 78.09% nitrogen, 20.95%oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases.
nitrogen
Nitrogen
Nitrogen does
Nitrogen makes up about 78 percent of Earth's atmosphere.
Nitrogen
Nitrogen makes up 78% of Earth's atmosphere.
The most prominent gases are nitrogen (78 percent), oxygen (21 percent) and argon (nine-tenths of a percent).
Nitrogen makes up approximately 78% of Earth's atmosphere.
78%
Nitrogen, it actually makes up just over 78% of the Earths atmosphere by volume.
Nitrogen, making up about 78% of Earth's atmosphere. Oxygen follows as the second most abundant gas, making up approximately 21%.
90% of 78 = 90% * 78 = 0.9 * 78 = 70.2