Question

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

Both use plants to help keep sand on the beach.
Both use plants to help keep sand on the beach.

Both provide flood protection in the event of high waves.
Both provide flood protection in the event of high waves.

Both bring sand to the beach from offshore.
Both bring sand to the beach from offshore.

Both are hard structures that reduce erosion caused by waves.

Answer 1

Both are hard structures that reduce erosion caused by waves.

(Jetties and seawalls are engineered, hard structures: jetties interrupt longshore drift and protect inlets; seawalls block and reflect wave energy to protect the shore.)