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← GeographyWhich primary erosional outcome occurs when wave refraction concentrates energy?
A)Sea stack base undercutting worsens✓
B)Backshore sediment accretion stabilizes faster
C)Lagoon sedimentation rates rapidly decline
D)Tombolo protection widens sediment deposits
💡 Explanation
Wave refraction focuses energy on stack bases which causes differential erosion. Undercutting thus worsens because the concentrated wave action accelerates the weathering and removal of weaker rock material, therefore collapse is more likely, rather than more diffuse changes.
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