Which primary long-term benefit did terrace farming provide in the steep Andean highlands?

💡 Explanation

Terrace farming transformed steeply sloped land into a series of level platforms; this slope reduction via terracing minimized runoff soil erosion and enhanced water infiltration and water retention. Therefore soil conservation and water capacity increased yield, rather than enhancing mineral weathering by pest control or promoting sunlight exposure which require different conditions to work.

• Which optical distortion increases when using parabolic mirrors with imperfections during medieval Islamic astronomical observations?
• During a Roman siege, which defensive consequence arises from constructing an artillery-resistant glacis slope?
• Which structural consequence arises when oak timbers in 18th-century ship construction were not sufficiently seasoned before use?
• Which limitation arises when using early astrolabes to measure distant star altitudes near twilight?
• Which optical phenomenon led Alhazen to challenge the Ancient Greek emission theory of vision?
• Which observational distortion complicated astronomical calculations performed using astrolabes during the medieval era?