Which of the following best explains why Mars' and Venus' surface temperatures vary, despite both planets having atmospheres that contain mostly carbon dioxide? (1 point)
O Mars has a surface of red rocks and sand which reflect heat.
Venus has a thick atmosphere which blocks heat from the surface.
Venus has a surface of high mountains which absorb heat.
Mars has a thin atmosphere that cannot hold much heat.

option 4)Mars has a thin atmosphere that cannot hold much heat.

Explanation:

Mars experiences violent dust storms which continually change its surface. Mars has a very thin atmosphere made mostly of carbon dioxide. It is not thick enough to trap the sun's heat, so the planet is very cold. Since Mars has very weak gravity it cannot hold onto the atmosphere well.

I hope this helps a little bit

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