The air of Mars is made of carbon dioxide molecules.
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The first important thing to know is that there is not a lot of water to be found in the environment of Mars. On Earth, the atmosphere is composed of mostly of nitrogen and oxygen. On Mars the amosphere is made mostly of carbon dioxide with a lot of dust particles mixed in.
Shop Windows to the Universe Science Store!
Learn about Earth and space science, and have fun while doing it! The games
section of our online store
includes a climate change card game
and the Traveling Nitrogen game