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)

Question

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)

Responses

Venus has a surface of high mountains which absorb heat.
Venus has a surface of high mountains which absorb heat.

Mars has a surface of red rocks and sand which reflect heat.
Mars has a surface of red rocks and sand which reflect heat.

Mars has a thin atmosphere that cannot hold much heat.
Mars has a thin atmosphere that cannot hold much heat.

Venus has a thick atmosphere which blocks heat from the surface.

Answer 1

Venus has a thick atmosphere which blocks heat from the surface.

Answer 2

Venus has a thick atmosphere that traps heat, leading to extreme surface temperatures. This greenhouse effect causes Venus' surface to reach temperatures hot enough to melt lead. On the other hand, Mars has a thin atmosphere that cannot retain heat well. This results in much colder surface temperatures on Mars compared to Venus. So, the correct response is: Venus has a thick atmosphere which blocks heat from the surface.