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Shaping the coast. The sea is a windy place. The wind makes waves. Waves become tall and break as the sea becomes shallow. . Some coasts are always battered by waves. . Some coasts don’t get big waves. . Big waves during storms can erode the coastline. . An eroding coast. .
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Walls have been built to stop the top of the cliff falling onto people on the beach.
Mangroves are nature’s way of protecting the coast from storms.