The air mostly consists of nitrogen. :)
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Nitrogen is the most abundant gas in Earth's atmosphere, making up about 78% of the total volume. Oxygen is the second most abundant gas, at around 21%.
The troposphere is the most abundant layer in Earth's atmosphere. It is where most weather phenomena occur and contains about 75% of the atmosphere's mass.
The two most abundant gases in Earth's atmosphere are nitrogen (about 78%) and oxygen (about 21%).
Nitrogen is the most abundant gas in Earth's atmosphere, making up about 78% of the air we breathe. Oxygen is the second most abundant gas, at around 21%.
The most abundant inert gas is argon, which makes up about 0.93% of Earth's atmosphere.
The three most abundant gases in Earth's atmosphere are nitrogen (78%), oxygen (21%), and argon (0.93%).