A ___________ is a wall or embankment of wood , concrete or rock installed along retrograding beaches to effectively keep sand on a specific beach.

Question

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A groin is a wall or embankment of wood, concrete, or rock installed along retrograding beaches to effectively keep sand on a specific beach. Barrier bars are sand ridges that run parallel to the shoreline, spits are narrow extensions of land that extend from the coastline out into the water, estuaries are coastal bodies of water where rivers and oceans meet, and a jetty is a long, narrow structure that is constructed perpendicular to the shoreline to protect a harbor or inlet from waves and sediment.

A ___________ Is a Wall or Embankment of Wood