Which benefit resulted from the annual sediment dredging in ancient Aztec chinampa agriculture?

💡 Explanation

When chinampas were regularly dredged, nutrient-rich sediment from the canal bottom was deposited because decomposed organic matter accumulated, enhancing soil fertility on the planting beds. Therefore increased fertility results, rather than pest reduction, improved drainage, or island stability, which depend on different factors.

• Which outcome occurs when ancient bronze-smiths quenched rapidly as-cast bronze objects in cold water?
• Which agricultural adaptation addressed deficiencies in soil nitrogen within Pre-Columbian chinampa systems focused on maize cultivation?
• Which mechanism allowed early suspension bridges to span longer distances than arch bridges?
• Which consequence resulted when early chronometers experienced large temperature variations on long sea voyages?
• Which risk increases when Inca agricultural terraces experience excessive rainfall on steep slopes?
• Which risk increases in Roman aqueducts when calcium carbonate concentration markedly increases in the water source?