Which mechanism maintains terrace structural integrity in pre-Columbian Andean agriculture after heavy rainfall?

💡 Explanation

After heavy rainfall, root networks provide soil anchorage because tensile strength from intertwined roots binds soil particles, preventing erosion and maintaining terrace structure from collapse. Therefore, root networks stabilize the system, rather than capillary action, clay content, or shallower angles which offer less reliable stabilization against high rainfall loading.

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