Which type of coastal defences is meant to keep sweater out of a place? Which coastal defences makes waves break earlier, out at sea? ​

Groynes, Sea wall, Revetments, Breakwaters and Gabions.

Explanation:

Groynes, Sea wall, Revetments, Breakwaters and Gabions are the types of coastal defenses that keep sea water out of a place and helps in the protection of the coastal area. All these coastal defenses such as Groynes, Sea wall, Revetments, Breakwaters and Gabions etc helps in the breaking of waves that is coming from the ocean to the coast.

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