Which consequence results when terraced hillsides lack sufficient drainage channels?

💡 Explanation

Landslides occur because increased water saturation within the terraces causes increased pore pressure, therefore reducing soil shear strength until slope failure occurs, rather than offering stability under wet conditions.

• Which vulnerability critically limited the effectiveness of medieval trebuchets during sieges targeting castle walls?
• Which structural problem arises in a medieval stone arch bridge if the keystone is removed?
• Which risk increases when setting an astrolabe's alidade improperly?
• When a Viking longship tilts excessively in heavy seas, which consequence develops due to shifting cargo?
• Which mechanism causes inconsistent initial velocity during early cast iron crossbow manufacture?
• Which destructive outcome risks befalling Roman siege towers using sustained fire?