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← GeographyWhich mechanism accelerates barrier island submergence during increased storm frequency?
A)Increased overwash transports sediment landward✓
B)Biochemical weathering decreases sediment cohesion
C)Isostatic rebound elevates landmasses slowly
D)Subduction minimizes relative sea level rise
💡 Explanation
Increased wave energy causes more overwash, a phenomenon where sand moves from the ocean side to the lagoon side, because it's more frequent. Therefore, total island volume lowers, rather than the island accreting vertically or being protected from subsidence.
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