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← GeographyWhich coastline change results when seasonal river sediment load exceeds longshore drift capacity?
A)Delta formation at the river mouth✓
B)Increased sea stack erosion rate
C)Spit formation along prevailing winds
D)Barrier island migration accelerates inland
💡 Explanation
A delta forms because sediment deposition overwhelms the transport capacity of longshore drift, therefore, a river mouth delta grows larger to balance fluxes of eroded upland sediment rather than coastal features eroding from wave action or wind changes.
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