Which risk increases when an inadequately designed Pre-Columbian terrace wall experiences prolonged saturation during heavy rainfall?

💡 Explanation

When terrace wall is saturated, hydrostatic pressure increases because water fills pore spaces, generating outward force against structure until sheer exceeds compression. Therefore, pressure-induced failure increases rather than nutrient runoff decrease, microbe decomposition increase, or thermal expansion, all requiring different triggering events.

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