What is tides?
The tides is daily changes in the height of water along coast.tides on earth are mostly caused by the gravity of moon. at high tides the oceans is pulled toward land, the beach becomes a narrow strip of sand, at low tides ,the oceans is pulled away from the beach is much wider. have you never been to the oceans?if you have probably noticed thant t he water is low during part of the day and high during another part of the day.these changes in the water level of the oceans are called tides
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