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← GeographyWhich outcome increases when mountain stream downcutting declines?
A)Sediment transport to floodplains decreases
B)River sinuosity and meander cutoffs increase✓
C)Bedrock exposure in the channel increases
D)Hyporheic exchange flow rates stabilize
💡 Explanation
Increased river sinuosity occurs when downcutting declines because lateral erosion becomes dominant through meander migration, therefore side-cutting accelerates, rather than vertical because streams seek equilibrium.
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