Which planets have liquid water?

-venus and earth
-earth and mars
-neptune and earth
-earth only

Only Earth has water on it, even though scientists today believe there might have been water on Mars at one point. Hope this helps!

Earth only.

Explanation:

Earth is the only planet where life exists. The earth's average temperature, its chemical composition and the presence of oxygen makes life possible on earth.

Earth more than half surface area is covered with water. Earth constitute nearly 70% of the water bodies. Hence, earth is the only planet where liquid water exists.

Thus, the correct answer is option (4).

layer 3 is younger than layer 6.

c is the correct answer!