Which process limited terrace effectiveness in Andean potato cultivation?

💡 Explanation

Erosion caused terraces to degrade and lose structure because gravity-driven soil loss exceeded natural replacement. The terraces could not effectively retain soil due to surface runoff, therefore agricultural yields declined rather than being maximized with ideal terrace geometry.

• Which limitation arose when using early Islamic astrolabes for navigation near Earth's magnetic poles?
• Which risk increased use of thinner dura layering in Mughal pietra dura?
• Which vulnerability during siege arises because stone fortifications undergo differential expansion?
• Which outcome results when a disruption affects aqueduct pressure in Mughal garden systems?
• Which structural mechanism caused the collapse of some Roman aqueduct arches during seismic activity and large temperature swings?
• Which effect arises when poorly-drained chinampas inhibit maize yields?