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← HistoryWhich consequence results due to poorly maintained terrace drainage when planting maize?
A)Increased slope instability and landslides✓
B)Accelerated nutrient depletion of soils
C)Decreased efficiency of water absorption
D)Reduced ability control crop pests
💡 Explanation
Increased slope instability and landslides result if the terraces are poorly drained because the mechanism, called pore water pressure, increases due to water accumulating in the soil. Therefore, the soil's shear strength weakens, rather than the nutrient depletion scenario that affects long-term soil health.
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