On ancient Andean terraced farmland, nutrient depletion risk escalates due to which mechanism?

💡 Explanation

Topsoil erosion on a terrace leads to nutrient loss because selective removal of finer particles occurs via sheet wash. The mechanism is differential transport. Therefore fertility declines, rather than issues due to hydraulics or fertilizer overdose.

• When stacked masonry arch segments incompletely transfer compressive stress under load, which outcome results?
• Which structural weakness affected Roman fortifications using opus caementicium in cold climates?
• Within Mughal gardens, which outcome decreased over time as water source distances increased to serve larger pietra dura inlaid mosaics and fountains?
• Which outcome occurred when hillside terrace construction exceeded soil cohesion limits in ancient Andes?
• Which risk became prevalent in pietra dura due to thermal expansion across seasons?
• Which outcome resulted from using bronze to reinforce siege towers, rather than iron?