This drawing represents several features of the atmosphere on Mars including: dust storms, an atmospheric pressure much lower than found on Earth, and a composition primarily of carbon dioxide.
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The atmosphere of Mars is mostly carbon dioxide (95.3%). So, the Martian atmosphere is what you would call a major source of carbon. Scientists say there may be more carbon inside the Martian clouds. However, Mars has very little cloud cover compared to most planets, so there can't be a lot of carbon trapped here.
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