Which mechanism increased agricultural yields in Aztec chinampas compared to open-field cultivation?

💡 Explanation

In Aztec chinampas, nutrient-rich sediment was dredged from the canals and used as fertilizer, directly enriching the soil because it acted as continuous replenishment, leading to higher yields. Therefore dredging sediment resulted in greater agricultural output, rather than crop rotation, drainage, or terracing which are less directly effective in the specific chinampa environment.

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