Multiple choice question.

Upward and downward movement of ocean water is known as the:



A is correct. Tide refers to the upward and downward motion of ocean water, caused by the gravitational pull of the moon.


B is incorrect. Current refers to the onward movement of the water, caused by variations in temperature and density of water.


C is incorrect. Waves are generated by the winds that blow over the seas, and carried forward by these winds

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