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← GeographyWhich outcome is amplified when wave diffraction focuses energy around coastal headlands with sea stacks?
A)Accelerated stack base erosion✓
B)Increased sandbar deposition
C)Reduced longshore current velocity
D)Diminished tidal range variation
💡 Explanation
Concentrated wave energy due to wave diffraction around headlands will increase the Hydraulic action on the stacks; because wave energy is focused at the base therefore accelerated erosion worsens the stack. It's Hydraulic action rather than deposition, reduced currents, or modified ranges.
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