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← GeographyWhich outcome arises from increased sediment deposition near groynes?
A)Increased erosion down-drift shoreline✓
B)Stabilized longshore current velocity
C)Formation of offshore sandbars
D)Reduced biological diversity intertidally
💡 Explanation
Increased sediment deposition up-drift from a groyne inhibits sediment supply in longshore transport, thus reducing the supply of sediment down-drift. This causes erosion down-drift because of sediment starved conditions, therefore increased erosion occurs downslope, rather than sandbar formation.
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