Which risk increases when pre-Columbian terracing lacks sufficient drainage?

💡 Explanation

Accelerated structural creep deformation becomes a risk because hydrostatic pressure increases pore water pressure, weakening soil cohesion via effective stress reduction; therefore deformation increases rather than enhanced plant growth which requires aeration.

• Which function relies on stereographic projection when constructing flat astrolabe plates in medieval astronomy?
• Which agricultural risk increased as chinampa farming intensified within the Aztec Triple Alliance?
• Which consequence results when subsurface soil erosion undermines a ziggurat's foundation?
• Which systematic error affects celestial navigation using a sextant during a long voyage when temperature varies considerably?
• Which risk increases when accumulated rainwater cannot drain properly from a ziggurat's terraces?
• Which outcome arises regarding Viking longship maneuverability when sailcloth permeability exceeds optimal limits?