Which outcome threatens agricultural yields when Inca terracing weirs degrade?

💡 Explanation

Increased erosion results when key weirs fail due to hydraulic action. The primary mechanism of soil loss is sheet erosion because the terraces lose protection, therefore, cultivated fields decrease because sediment flows downslope, rather than water retention decreasing locally.

• Which materials failure increases during sericulture if silkworms overheat?
• Which risk increases when early Chinese furnaces over-cycled iron ore heating?
• Which outcome directly enabled dense maize cultivation in pre-Columbian chinampa systems?
• Which iterative algebraic process did Al-Khwarizmi's method, 'al-jabr,' effectively apply to solve quadratic equations geometrically?
• Within the 11th-century Book of Optics, which phenomenon results from Ibn al-Haytham's geometric analysis of conic sections?
• Which limitation increased during early medieval terrace farming?