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← HistoryWhich benefit results when ancient hillside terraces incorporate agricultural drainage?
A)Reduced soil erosion long-term✓
B)Increased fertilizer nutrient concentration
C)Decreased pest insect abundance
D)Improved crop oxygen saturation
💡 Explanation
Reduced soil erosion occurs due to terracing that interrupts runoff. This occurs throughout soil retention rather than causing nutrient changes; therefore, the terrace steps dissipate water's energy, rather than modifying fertilizer distribution.
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