Question

31 earth is the only planet in the solar system known to have _. carbon dioxide in its atmosphere a moon liquid water on its surface a rocky surface skip 30/47 complete

Explanation:

Other planets in the solar - system also have carbon dioxide in their atmospheres (e.g., Venus). Many planets have moons (e.g., Jupiter has numerous moons). Some planets have rocky surfaces (e.g., Mars). Earth is unique in having liquid water on its surface under current conditions due to its distance from the Sun, atmosphere, and other factors.

Answer:

C. liquid water on its surface