Over-irrigation in the historical Inca terracing system, resulting in soil saturation, most directly triggers which outcome?

💡 Explanation

Reduced frictional shear strength happens because water infiltration increases pore pressure, therefore reduces effective normal stress, leading to slope instability rather than altering CO2, heat absorptionor improving root oxygenation.

• Which limitation arose when using early Islamic astrolabes for navigation near Earth's magnetic poles?
• Which problem increased as early steam engines scaled up to power industrial machinery?
• Which destructive force most compromises Byzantine mosaic tesserae integrity overall?
• Which algebraic problem was essential for medieval Islamic astronomers to accurately orient an astrolabe given observed star altitude?
• Which increased risk accompanied Harrison's chronometers aboard ships?
• Which outcome arises when inadequately compacted terrace soils in Andean agriculture experience heavy rainfall?