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_____ has a thin atmosphere of carbon dioxide and contains the largest volcano in the solar system, as well as an enormous system of canyons.

A) Mars
B) Venus
C) Uranus
D) Mercury

User ItsLydt
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2 Answers

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The correct answer is A
User Benoit Blanchon
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Your answer is A Mars Mars has a big volcano 2× larger than mount Everest it also has a lot of canyons and a thin atmosphere of gases.

Your answer is A.
User Mike Boddin
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