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Yes. all the terrestrial planets have atmospheres. however, in the same area that there are 10 Billion Billion Atoms in earth's atmosphere, (about 1 cubic in) there are about 10 million atoms in Mercury's. maercury has almost no atmosphere, and we don't even know what it is, but both mars and Venus's atmospheres are 95 % CO2, but venus's atmosphere is thick, even thicker than earth's, but mars's is thinner than earths. all the terrestrial planets have some kind of atmosphere.

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How is the atmosphere of Venus different from that of other terrestrial planets?

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