Which consequence arises in ancient agricultural terracing when subsurface drainage is blocked?

💡 Explanation

Blockage impedes underground runoff, inhibiting dissipation. Internal hydrostatic pressure builds up due to saturated soil, triggering slope instability; therefore landslide risk increases in the weakened terrace, rather than nutrient runoff or erosion control which relate to surface phenomena.

• Which consequence results when a surveyor using a medieval Islamic astrolabe incorrectly simplifies an algebraic equation representing inaccessible height?
• Which unintended operational consequence occurred due to incomplete settling basins within Roman aqueducts?
• Which mechanism allowed Alhazen to accurately describe light refraction in the 11th century?
• Which mechanism critically undermined Roman road structural integrity in regions with frequent freeze-thaw cycles?
• Which consequence resulted when suspension bridge cable strands corroded during the Industrial Revolution?
• Which material degradation process reduced longevity for exterior Mughal 'pietra dura'?