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← GeographyWhich consequence results along coastlines when permafrost degrades?
A)Increased coastal erosion rates significantly✓
B)Expansion of mangrove forest ecosystems
C)Decreased frequency of storm surges
D)Stabilization of coastal sand dunes
💡 Explanation
Increased coastal erosion will occur because thawing permafrost undergoes **thermal erosion**, weakening coastal bluffs; therefore, cliffs fail rapidly rather than remaining stable due to vegetation, decreased storm severity or mangrove expansion affecting wave impact.
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