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← HistoryWhich cultivation outcome arose from contour terracing of steep Andean slopes?
A)Reduced erosion and increased yield✓
B)Decreased biodiversity of crops
C)Greater susceptibility to landslides
D)Accelerated soil nutrient depletion
💡 Explanation
Contour terracing created level platforms on slopes. This enabled soil retention by reducing water runoff (surface runoff mechanism). It decreased erosion and therefore increased yield rather than causing negative landslides because water is slowed, not stopped entirely contributing to saturated soil.
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