Which risk increases when ancient Peruvian terraces experience prolonged heavy rainfall conditions?

💡 Explanation

When terraces experience prolonged heavy rainfall, hydrostatic pressure exceeding soil shear strength causes soil liquefaction, leading to downslope movement and catastrophic structure failure due to slope instability. Therefore, erosion and terrace collapse increases, rather than salinization, silt accumulation, or weed infestation each requiring different agricultural or environmental mechanisms.

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