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← GeographyWhich outcome is accelerated when longshore drift slows near groynes?
A)Increased coastal erosion down-drift✓
B)Enhanced deposition up-drift side
C)Elevated marine biodiversity overall
D)Reduced sediment cell connectivity
💡 Explanation
Coastal erosion increases down-drift because the mechanism of sediment transport is interrupted by the groin; therefore, down drift areas are sediment-starved, rather than experiencing continued beach accretion.
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