Which outcome resulted when ancient Mesoamerican chinampa farmers over-cultivated maize without nitrogen replenishment?

💡 Explanation

When maize is continually cultivated on chinampas without nitrogen replenishment, soil nitrogen depletion occurs because maize crops heavily consume soil nitrogen. Therefore, subsequent maize crop nutrient uptake decreases, rather than salinization accumulation, anemia incidence, or microorganism collapse, because nitrogen exhaustion primarily limits crop growth initially.

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