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← HistoryWhich outcome emerged as excessive terrace construction during pre-Columbian maize cultivation altered watershed dynamics?
A)Increased downstream sediment deposition✓
B)Enhanced soil nutrient retention locally
C)Improved regulation of river flow
D)Reduced frequency of slope failures
💡 Explanation
Increased sediment emerged because erosion accelerated via increased runoff: soil detachment exceeds holding capacity, therefore sediment outflow increases, rather than sediment deposition reduction or improved hillslope stability.
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