Answer:
A. Lava flows block a river.
D. Ice sheets leave depressions that fill with water.
E. Movement of Earth's crust creates low areas that fill with water
Explanation:
They both orbit around the sun. They both have moons, rings, and colored bands. They both have gas giants.
If your question is literally how long they could remain without water, the answer is 1-2 days with major side effects, and 3-4 with certain death.