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Geography

Which outcome increases down-drift when groynes trap sediment?

A)Increased coastal erosion
B)Formation of barrier islands
C)Expansion of salt marshes
D)Elevation of the water table

💡 Explanation

Increased coastal erosion occurs down-drift because sediment is trapped up-drift by groynes, resulting in sediment starvation; therefore erosion increases, rather than sediment accretion or stability which would build up geographical features.

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