Question

Which planet has dried up riverbeds that are clear evidence of surface liquid water in the distant past, although no rivers of water are seen today?

1) Mars
2) Neptune
3) Earth
4) Mercury
5) Saturn
6) The Sun
7) Eris
8) Uranus
9) Venus
10) Jupiter
11) Pluto

Answer 1

Mars is the planet with dried up riverbeds that are clear evidence of surface liquid water in the distant past.

Step-by-step explanation:

The planet with dried up riverbeds that are clear evidence of surface liquid water in the distant past, although no rivers of water are seen today, is Mars.

Mars has a long history of liquid water on its surface, but today the surface is mostly dry and cold. However, there is strong evidence for subsurface water on Mars, and even today water flows briefly on the surface under the right conditions.