Which mechanism limited pre-Columbian andean terrace agriculture expansion above certain altitudes?

💡 Explanation

When temperatures dropped below freezing, frost heave occurred because water expanded upon freezing within the soil matrix, causing soil particles to lift and terrace walls to fracture. Therefore, fracturing increased maintenance, limiting expansion, rather than leaching, material, or irrigation which required other limiting resources or physical conditions.

• Which outcome resulted from intensive chinampa farming practices around Tenochtitlan, 14th-16th centuries?
• Which property determined the suitability of arsenical bronze axes for felling timber in Mesopotamia before ~3000BCE?
• Which risk increased when pre-Columbian Andean civilizations scaled up maize agriculture via terrace farming?
• Which impact occurred when Roman road construction introduced a dense, impermeable pavement layer into a previously permeable landscape?
• Which risk increases when pre-Columbian terrace construction destabilizes steep hillside slopes above dwellings?
• Which accuracy limitation arises from aligning an astrolabe to observe a distant landmark at twilight?