Question

Type the correct answer in the box. Spell all words correctly.

South Carolina has a small river that flows into the sea. Over time. sediments build up along the coastline and cause the body of water to be cut off from the sea. What type of estuary undergoes this kind of change?
a) Coastal
b) Bar-built
c) Fjord
d) Δ

Answer 1

A bar-built estuary is formed from the accumulation of sand and silt, separating it from the ocean.

Step-by-step explanation:

The type of estuary undergoing changes from sediment build-up along the coastline and becoming cut off from the sea in South Carolina is a bar-built estuary. Bar-built estuaries are formed when sandbars or silt build up due to deposition by the longshore drift and waves, creating a separation from the open sea. Over time, the accumulated sediments can fully or partially isolate the estuary's water from the ocean, leading to changes in salinity and ecosystem dynamics within the estuary.