Oxygen.
Nitrogen makes up 78% of Earth's atmosphere.
Nitrogen makes up about 78 percent of Earth's atmosphere.
Oxygen is the gas that accounts for about 20 percent of Earth's atmosphere.
Nitrogen makes up approximately 78% of Earth's atmosphere.
Oxygen makes up about 21% of Earth's lower atmosphere by volume.
Argon makes up about .93 percent of the Earths atmosphere. Hope this helps! (:
argon
Nitrogen makes up 78% of Earth's atmosphere.
Nitrogen
Nitrogen makes up about 78 percent of Earth's atmosphere.
Oxygen is the gas that accounts for about 20 percent of Earth's atmosphere.
Nitrogen makes up approximately 78% of Earth's atmosphere.
Earth's atmosphere is mostly made up of nitrogen, which makes up 79 percent. The atmosphere contains 20 percent oxygen and 1 percent other gases.
Nitrogen, it actually makes up just over 78% of the Earths atmosphere by volume.
the element of find onther place to look it up
Oxygen makes up about 21% of Earth's lower atmosphere by volume.
Earth's atmosphere is mostly made up of nitrogen, which makes up 79 percent. The atmosphere contains 20 percent oxygen and 1 percent other gases.