Nitrogen & oxygen.
Nitrogen and oxygen, respectively, are the two most abundant gases in the earth's atmosphere.
on ancient Earth, nitrogen, water vapor, carbon dioxide, and methane were probably the most abundant gases in the atmosphere.
Nitrogen and Oxygen
Hydrogen, Nitrogen, Oxygen
Nitrogen N2 78.08% Oxygen O2 20.95%
The Abundant gases are Nitrogen, Helium, and other gases in the Secondary Atmosphere.
The most abundant gases are nitrogen and oxygen in the Earth atmosphere.
Helium is the most abundant of the Noble gases in the universe.
Gases
The Earth atmosphere is formed from gases.
Most abundant - Water Vapor
There are many gases in the atmosphere. The two most common gases found in the atmosphere however, are nitrogen and oxygen.