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← GeographyWhich consequence results when rapid aggradation overwhelms river levees?
A)Increased floodplain lateral migration speed✓
B)Accelerated chemical weathering of bedrock
C)Reduced regional groundwater recharge rate
D)Downstream nutrient load reduction rates
💡 Explanation
Floodplain lateral migration speed increases because sediment deposition exceeds levee height; therefore, the river cuts laterally, rather than increasing channel depth, and does not directly impact bedrock weathering.
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