Which outcome accelerates depletion of soil nitrogen on pre-Columbian chinampas with intensive maize farming?

💡 Explanation

When maize farming is intensified, nutrient demand rises, promoting anaerobic zones via waterlogging where denitrification by bacteria converts nitrates to nitrogen gas, leading to nitrogen loss. Therefore, nitrogen depletion results, rather than phosphorus fixation, reduced sun, or cooling which require different preconditions.

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