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← GeographyWhich geomorphic outcome distinguishes a fjord from others?
A)Isostatic rebound creating raised shorelines
B)Unconsolidated sediment sorted by meltwater
C)U-shaped valley deepened past sea-level✓
D)Permafrost degradation causing thermokarst features
💡 Explanation
A fjord results in a U-shaped valley because glacial erosion during ice ages deepens the valley past sea level via glacial abrasion creating the defining feature. Therefore, U-shaped valleys characterize fjords; rather than permafrost, post-glacial deposition, or isostatic mechanisms.
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