Which outcome results from intensified maize cultivation in the ancient Three Sisters system without nutrient replenishment?

💡 Explanation

When maize cultivation intensifies without nutrient reintroduction, nitrogen depletion occurs because maize is a heavy nitrogen feeder and the traditional fallow period is shortened, decreasing natural soil regeneration. Therefore reduced harvests from nitrogen-deficient soil result, rather than increased disease, reduced pollination, or enhanced water retention which require different environmental contexts.

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