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← HistoryWhich outcome results when terrace construction destabilizes during Incan road building?
A)Erosion increases, destroying stepped terrain.✓
B)Water runoff sharply decreases downslope.
C)Crop yield significantly increases uphill.
D)Sediment accumulation decreases landslide threat.
💡 Explanation
Increased erosion results because soil is exposed when terrace support fails, activating the mechanism of soil particle detachment, therefore removing the horizontal barriers. This loss of support leads to soil erosion, rather than decreased runoff or crop increase, under these construction damage parameters.
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