Which agricultural consequence results when chinampa fertility decreases?

💡 Explanation

Declining fertility decreases populations of soil microbes; therefore, ammonium oxidizing bacteria, crucial for completing nitrification, become scarce. This hinders nitrate mineralization efficacy because without sufficient nitrification, nitrogen remains in less usable forms rather than readily usable nitrates.

• Which risk increases when an astrolabe is produced via lost-wax casting?
• Which outcome limits a 'longship' sea voyage when sailcloth degrades?
• Which constraint primarily limited the height of Roman concrete fortifications, such as the Porta Nigra?
• During 18th-century shipbuilding, which mechanism limits ship size despite improved construction techniques?
• Which obstacle limited Song Dynasty cast iron ploughshare production?
• Which function benefitted from Al-Khwarizmi's foundational work on algebra when calculating astronomical movements?