Which problem arose preventing stable high-yield crop production in some chinampa systems around Tenochtitlan?

💡 Explanation

Decreased maize yields occurred when the supply of organic-rich bottom mud from the canals slowed as canals degraded; organic matter accretion through bacterial nitrogen fixation was the primary REPLENISHMENT MECHANISM. Therefore, crop health degraded, rather than a rise in predator effectiveness or crop disease.

• Which consequence results when a geared astrolabe experiences excessive hygroscopic stress?
• Which outcome resulted from the trebuchet's counterweight dropping?
• Which outcome resulted when Mesoamerican farmers cultivated maize in chinampas with high water tables?
• Which mechanism causes reduced longship stability when its cargo shifts during ocean travel?
• Which agricultural disadvantage becomes limiting on pre-Columbian steep terrace farms in the Andes after sustained rainfall?
• Which structural weakness increased in 18th-century warships when builders rapidly cured timbers using kiln drying?