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← HistoryWhich consequence arises when terraced maize agriculture disrupts topsoil retention?
A)Reduced downstream turbidity results
B)Increased nitrogen fixation occurs
C)Accelerated downstream siltation occurs✓
D)Elevated carbon sequestration happens
💡 Explanation
Disrupted topsoil retention causes increased downstream siltation because soil erosion overcomes natural hydrological buffering, initiating sediment transport in waterflow as *hydraulic entrainment*. Therefore, silt accumulation increases, rather than leading to improvement in water conditions or carbon levels.
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