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← HistoryWhich destabilizing outcome accelerated erosion after Inca abandonment of their terracing systems?
A)Oxidation of the hydraulic cement
B)Fracture from freeze-thaw cycles
C)Increase in soil pore pressure✓
D)Decomposition of the mortar binder
💡 Explanation
Mass wasting increased because the removal of root systems decreased soil cohesion, creating increased pore PRESSURE, a contributing cause of slope instability and landslides. Therefore, excess water permeated the soil rather than being taken up by plants.
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