Fact 1: The gravitational pull of the Moon on Earth 's oceans causes the tides.

Fact 2: Tides A tide is vertical movement of water.

Given the two facts above, answer the question "The moon's gravitational pull on Earth 's oceans causes the vertical movement of what?" with the following options: 
- oceans
 - rivers
 - matter
 - waves
 - deserts
 - asteroids
 - the sun
 - water


 

        water 