List the atmosphere gases in order of abundance

Nitrogen (N2)

Oxygen (O2)

Argon (Ar)

Carbon dioxide (CO2

By far, the most abundant gas in the Earth's atmosphere is nitrogen, which estimates for about 78% of the volume of dry air. Oxygen is the following most plentiful gas, present at levels of 20 to 21%. next comes Argon which  contains 0.934%  of the mass of dry air, and then carbon dioxide consists of 0.0314% of air's mass

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