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← GeographyWhich outcome results when continued wave action erodes a sea stack's base?
A)Increased risk of structural collapse✓
B)Decreased longshore sediment transport
C)Formation of cryoturbation features
D)Enhanced chemical weathering rates
💡 Explanation
Wave action erodes the base of structures via hydraulic action because water and air trapped in cracks compress under wave impact; a destabilized structure has elevated risk of collapse. Therefore, collapse risk increases, rather than altered sediment transport because sediment transport relates to grains moved by shallow longshore drift.
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