Mars has an atmosphere but it is much thinner than earths. It's mainly carbon dioxide gas (95%).
The state of the common elements on Mars are all either a solid, liquid, or a gas. Some of them are found as only a solid, or only a liquid, or only a gas, or 2 of them, or all 3.
the most common gas is water vapor
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This gas is argon - 0,9340 %.
This gas is oxygen - 20,946 %.
This gas is argon - 0,984 %.
helium is a gas and is found only in the earth's atmosphere
helium,hydrogen.
Hydrogen, the most common element in the entire universe.
helium is a gas and is found only in the earth's atmosphere
Oxygen it helps the trees breathe too.