Which constraint limited pre-Columbian chinampa agriculture, if the surrounding lake's nitrogen input significantly decreased over multiple decades?

💡 Explanation

Inadequate micro-nutrient supply becomes crucial, because the nitrogen reduction limits nutrient processing within the chinampa's ecosystem, thus decreasing overall fertilization quality; therefore, micro-nutrients become proportionally scarcer, rather than water levels or carbon cycle, as their effects are secondary.

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• Which structural failure mode most critically threatened the stability of the Crystal Palace during high winds?
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• Which consequence arises due to limitations in applying Al-Khwarizmi's 'completion' method?