Which limitation constrained the deployment of extensive terraced agriculture by pre-Columbian Andean civilizations at elevations above 4000m?

💡 Explanation

Deficient soil microbial activity at freezing temps constrained high altitude terrace farming because nutrient cycling slows dramatically, limiting soil fertility for sustained yields. Therefore freezing temperatures inhibited activity, rather than solar irradiance, erosion or CO2, which have less direct impact than temperature on soil microbiology limitation.

• Which benefit primarily drove the adoption of chinampa construction by the Mexica civilization around Lake Texcoco?
• Which consequence arises if a chronometer's balance spring experiences significant temperature induced variations during celestial navigation?
• Which agricultural benefit resulted when Aztec chinampas used "sunken gardens" methodology in shallow lake Texcoco?
• Which risk increases when pre-Columbian terrace farming in the Andes reduces soil organic matter during intensive maize cultivation?
• Which outcome occurred when ancient Mesopotamian bronze metalworking reached temperatures above 1085°C in crucible furnaces?
• Which optical outcome increased accuracy in al-Haytham's pinhole camera obscura?