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← GeographyWhich outcome occurs when a coastal cliff composed of shale experiences repeated freeze-thaw cycles?
A)Increased rockfall risk via wedging✓
B)Diminished wave refraction patterns
C)Stabilized sediment deposition rates
D)Reduced coastline recession magnitude
💡 Explanation
Increased rockfall risk results, because freeze-thaw action causes ice wedging. Water expands upon freezing, exerting pressure within cracks. Therefore, shale fractures more easily, leading to rockfall and cliff instability, rather than stabilized coasts through other processes.
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