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← GeographyWhich outcome increases near groynes, because of longshore transport disruption?
A)Increased sediment deposition updrift✓
B)Decreased overall beach erosion
C)Enhanced offshore aggregate mining
D)Stabilized barrier island migration rates
💡 Explanation
Increased sediment deposition updrift occurs because the groyne obstructs longshore drift, promoting deposition on the updrift side. Consequently sediment starvation increases erosion downdrift, rather than a general reduction of erosion.
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