Which long-term consequence occurred because of decreased soil aeration in chinampa agriculture?

💡 Explanation

Decreased aeration in chinampas inhibits aerobic root respiration, limiting active transport of nutrients via ionic pumps; therefore crop nutrient uptake is reduced, rather than the other options involving gas production or decomposition rate changes because diffusion limits change.

• Which limitation constrained use of gunpowder in Song dynasty trebuchets, making sustained bombardment difficult?
• Which consequence arises when seasonal thermal expansion distorts the tympan of a brass astrolabe?
• Which application results when al-Battani modified Ptolemy's astronomical model using trigonometric functions?
• Which environmental shift threatened pre-Columbian chinampa maize cultivation in the Valley of Mexico?
• Which precision improvement results when al-Battani increased observational baseline?
• Which risk increases when Roman road drainage fails during spring thaw?