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Nitrogen makes up 78% of the Earth's atmosphere. Oxygen makes up about 21%.
argon
CARBONDIOXIDE
Nitrogen makes up about 79% of the atmosphere.
Oxygen.
balls
N2-Nitrogen
Carbon dioxide in 2014 made up 0.04% of the atmosphere. This figure is rising every year.
Nitrogen, it actually makes up just over 78% of the Earths atmosphere by volume.
nitrogen-
Nitrogen which makes up about 78 percent of the atmosphere.
You must be thinking of water. It varies a lot, but can be up to about 4%.