__________are structures built perpendicular to the coast along the entrance to navigable tidal inlets, river mouths, or harbours, to stop them from shifting location or filling with sand from beach drift or longshore currents.
A) Groins
B) Jetties
C) Seawalls
D) Breakwaters

Question

Quizplus · Accepted Answer

Jetties are constructed at the entrances of rivers, harbors, or tidal inlets to prevent the navigation channels from silting up and to protect against shoreline erosion. They extend from the shore into the water, perpendicular to the coast, to control the movement of sand and sediment, thereby stabilizing the channel.

__________Are Structures Built Perpendicular to the Coast Along the Entrance