Question

how do mangroves help the florida coastline?
a) they protect against longshore currents.
b) they keep groins from being chemically weathered.
c) they protect against wave erosion.
d) they cause deposition to occur.

Explanation:

Mangroves have root systems that dissipate wave energy, reducing the impact of waves on the coastline and thus protecting against wave erosion. Option A: Longshore currents are parallel to the shore, and mangroves don't primarily act against them. Option B: Groins are man - made structures, and mangroves don't relate to protecting groins from chemical weathering. Option D: Mangroves don't cause deposition as their main role in coastal protection is erosion control, not promoting deposition.

Answer:

C) They protect against wave erosion.