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← GeographyWhich risk increases when a fjord's stratification weakens?
A)Increased turbidity current frequency✓
B)Elevated concentration of glacial flour
C)Enhanced surface water evaporation
D)Faster thermohaline circulation speed
💡 Explanation
Increased turbidity current frequency becomes more likely because density differences, usually maintained by haloclines and thermoclines, are reduced when stratification weakens; this destabilizes sediments. The weakened `density stratification of seawater` allows downslope movement rather than stable layering. Therefore, A is correct rather than B, C, or D.
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