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← HistoryDuring the Inca empire, which outcome occurred when Andean terrace farming relied excessively on diverting glacial meltwater?
A)Aqueduct collapse causes downstream erosion
B)Soil salinization reduces long-term yields✓
C)Wind erosion increases topsoil loss
D)Nutrient depletion accelerates plant disease
💡 Explanation
Soil salinization increases with excessive irrigation because capillary action transports dissolved salts upwards to accumulate on the surface. Therefore, soil's osmotic potential rises, rather than erosion occurring or nutrient deficiencies.
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