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← HistoryWhat critical risk increased during Inca terrace construction?
A)Slope failure during intense rainfall✓
B)Erosion from sustained heavy winds
C)Topsoil acidification due to fertilization
D)Seed germination failure at high altitude
💡 Explanation
Terrace construction increased slope failure risk because removal/modification triggers decreased shear strength and increased water saturation, a form of soil liquefaction. Therefore, slope failure occurs rather than alternative processes like wind erosion, or chemical imbalances.
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