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← HistoryWhich consequence occurs when terrace steps erode in pre-Columbian agriculture?
A)Accelerated soil nutrient depletion occurs
B)Downslope water runoff increases dramatically✓
C)Maize requires specific mineral supplements
D)Terrace irrigation flow is more challenging
💡 Explanation
Increased downslope runoff occurs because of decreased stepped SURFACE ROUGHNESS reducing infiltration; therefore, water volume rapidly accelerates downslope, rather than being absorbed, intensifying general land erosion and soil destabilization during heavy rainfall events.
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