Which of the following are causes of coastal erosion? Check all that apply.

Beach grasses and other plants trap windblown sand.

Wave action carves away the coastline.

Groundwater under pressure is forced to Earth's surface.

Artificial structures stop the natural flow of sand along the coast.

Underground caves collapse as bedrock is dissolved.

Wave action carves away the coastline and Artificial structures stop the natural flow of sand along the coast are the causes of coastal erosion

Answer: Option B & D

Explanation:

Coastal erosion means the loss of the coastal land by removal of sediments. Coastal erosion mainly happens by the wave action which continuously hit the coast and remove the sediments. The materials taken by the waves should be replaced.

But man made constructions on the coastal area stands as a barrier. These constructions are not giving room for the sediments to get filled by the rivers draining into the Ocean.