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← HistoryWhich outcome arises from excessive sediment dredging within chinampa systems?
A)Loss of soil nutrient concentration✓
B)Reduced risk of land subsidence
C)Increased maize root aeration
D)Enhanced water filtration efficiency
💡 Explanation
Excessive dredging removes the accumulated organic-rich mud, decreasing soil fertility through nutrient depletion via sediment removal, rather than benefiting the remaining lands. This causes decreased nutrient availability; therefore, farming becomes limited, rather than increases in filtration capabilities.
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