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 mechanism limited broadside cannon fire rate on 18th-century wooden warships during naval broadsides?
• Which vulnerability exposed during Roman sieges with ballistae increased risk of defensive structure collapse?
• Which factor critically influenced the success of Roman siege towers despite advancements in defensive fortifications?
• Which vulnerability critically undermined Roman siege towers during protracted sieges?
• Which mechanical consequence resulted from iron ships vibrating at their resonant frequency caused by engine harmonics?
• Which mechanism primarily enabled the construction of the dome of the Florence Cathedral without extensive scaffolding?