The atmosphere is primarily composed of Nitrogen (N2), which accounts for 78%. Oxygen follows, accounting for 20% of its volume, with argon less than 1%. The remainder is composed of particulates and trace gases, including water vapor.
If by gas you mean an atmosphere, there are no planets with an atmosphere anywhere similar to Earth.
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Oxygen gas
ATMOSPHERE
About 1/5
Nitrogen
Nitrogen makes up the largest quantity in Earth's Atmosphere at 78%.
The troposphere, the lowest layer of the atmosphere, has the highest density of gas molecules. As you move higher into the atmosphere, such as into the stratosphere or mesosphere, the density of gas molecules decreases.
The atmosphere is made of gas molecules.
Nitrogen is about 79% of the Earth's atmosphere.
Nitrogen is about 79% of the Earth's atmosphere.
Nitrogen is about 79% of the Earth's atmosphere.
The highest concentration of gases in the atmosphere is nitrogen, which makes up about 78% of the Earth's atmosphere by volume. Oxygen follows as the second most abundant gas, comprising about 21%. Other gases, such as argon, carbon dioxide, and trace gases, are present in much smaller amounts.
Carbon dioxide is abundant gas in atmosphere. Argon is found only in traces.
Neon is an element found in the form of a gas. It is a rare gas that is found in the Earth's atmosphere.
Nitrogen
The primary gas found in Earth's atmosphere is nitrogen, making up about 78% of the air we breathe. Oxygen is the second most abundant gas, making up about 21% of the atmosphere.