Question

How do both jetties and seawalls help manage beach erosion?(1 point)

Both use plants to help keep sand on the beach.

Both provide flood protection in the event of high waves.

Both are hard structures that reduce erosion caused by waves.

Both bring sand to the beach from offshore.

Answer 1

Both are hard structures that reduce erosion caused by waves. They’re engineered barriers (jetties perpendicular to the shore, seawalls along it) built to block or redirect wave action and protect the coast.