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Which statement accurately describes the atmospheres of the inner planets? 1 Mars has no atmosphere. 2 Mercury has a thick atmosphere. 3 Mars and Venus have similar atmospheres. 4 Earth and Venus have similar atmospheres.
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Answer: 3

Explanation:

Two nearly identical spacecraft around Mars and Venus have compared the two worlds'atmospheres and found them to be surprisingly similar. Both Venus's and Mars's atmospheres are about 95 percentcarbon dioxide. Earth's is mostly nitrogen now, but scientists think it used tobe more like the other rocky worlds.

They are both close to the sun

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