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← GeographyWhich outcome occurs when a barrier island migrates landward?
A)Lagoon sediment deposition increases considerably✓
B)Offshore wave energy becomes amplified
C)Upland salinity levels inevitably decrease
D)Coastal erosion slows considerably offshore
💡 Explanation
As a barrier island migrates landward, sediment is deposited predominantly on the lagoon side via overwash and inlet formation; this back-barrier infilling causes lagoon sediment deposition, rather than affecting offshore wave energy, because the overall system readjusts due to sediment budget changes.
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