Gravity pulls objects towards planets.
Because of gravitation, objects that are on or near the earth are pulled toward it.
Water stays on earth's surface because of gravitational pull.
What causes water to stay on earth's surface?
Options:
[A] Clouds
[B] Planets
[C] rainfall
[D] friction
[E] Gravity
[F] sun's heat
[G] Dirt
[H] forces