The gravitational pull of the moon on earth 's oceans causes the tides.
Ocean tides enter and leave the bay twice a day.
The gravitational pull of the moon on earth 's oceans causes water to enter and leave the bay twice a day.
the gravitational pull of the Moon on Earth 's oceans causes water to enter and leave the bay when

[A] H20
[B] seasons
[C] weekly
[D] daily
[E] slow
[F] monthly
[G] strong
[H] annually