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Which mechanism maintains maize yield in the Inca's andenes when frequent landslides occur?

A)Terrace wall soil cohesion
B)Controlled floodwater irrigation
C)Crop rotation nutrient replenishment
D)Raised bed nitrogen fixation

💡 Explanation

Inca terrace farming uses terrace wall soil cohesion because their structure dissipates landslide momentum therefore terrace collapse is minimized, which preserves topsoil and root systems on the remaining terraces, rather than complete slope failure from erosion alone.

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