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← GeographyWhich consequence results when longshore drift encounters a partially submerged breakwater?
A)Sediment accretion increases behind breakwater✓
B)Wave diffraction decreases locally
C)Erosion increases uniformly downdrift
D)Rip current velocity directly decreases
💡 Explanation
Sediment accretes behind a breakwater due to decreased flow; longshore drift deposits material, accumulating because the breakwater reduces wave energy, rather than increasing erosion, which would happen with increased energy. This mechanism is called wave energy dissipation.
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