What term describes interruption of sand supply along a coastline?

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Multiple Choice

What term describes interruption of sand supply along a coastline?

Explanation:
Beaches rely on a steady supply of sand from rivers, cliff erosion, and alongshore transport. When that supply is interrupted, the beach can’t replenish itself, leading to loss of sand and shoreline retreat. This situation is called beach starvation. It often happens when dams trap sediment or structures like harbors disrupt the natural movement of sand along the coast. The other terms don’t describe this process: barrier island formation theories deal with how barrier islands form, an ocean beach is just a type of beach, and dunes are wind-formed sand ridges inland of the beach.

Beaches rely on a steady supply of sand from rivers, cliff erosion, and alongshore transport. When that supply is interrupted, the beach can’t replenish itself, leading to loss of sand and shoreline retreat. This situation is called beach starvation. It often happens when dams trap sediment or structures like harbors disrupt the natural movement of sand along the coast. The other terms don’t describe this process: barrier island formation theories deal with how barrier islands form, an ocean beach is just a type of beach, and dunes are wind-formed sand ridges inland of the beach.

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