Question

_____are the rise and fall of the water on the surface of the ocean

Answer 1

The periodical rise and fall of the sea level, once or twice a day, mainly due to the attraction of the sun and the moon, is called a tide. Movement of water caused by meteorological effects (winds and atmospheric pressure changes) are called surges. Surges are not regular like tides.

Answer 2

ANSWER☞ Periodical.

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