Which risk increases when irrigating pre-Columbian chinampas plots with overly nutrient-rich water?

💡 Explanation

When overly nutrient-rich water is used, algal blooms result because the excess phosphorus and nitrogen promote rapid algae growth in the surrounding canals, leading to oxygen depletion. Therefore, eutrophication risk increases, rather than the effects of alkalinity toxicity, or erosion, which have different originating factors.

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