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Which soil issue was amplified where terrace irrigation failed during Incan agriculture?

A)Increased topsoil erosion
B)Altered nitrogen fixation
C)Enhanced soil salinization
D)Accelerated nutrient depletion

💡 Explanation

Topsoil erosion accelerates because when terrace walls crumble during irrigation failure, sheet erosion increases due to gravity pulling soil down slopes rather than water distributing evenly; therefore increased erosion accelerates, rather than the other listed soil changes.

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