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← HistoryWhich outcome resulted in pre-Columbian chinampas when excessive organic material rotted?
A)Diminished resilience to waterlogging✓
B)Reduced rates of anaerobic decomposition
C)Increased nitrogen bioavailability to maize
D)Elevation of the planting surface height
💡 Explanation
Undigested organic compounds decreased the soil's capacity for gas exchange and increased decomposition rate, thus diminished resilience to future flooding, because saturation prevents nutrient cycling via oxygen availability. Therefore, over-accumulation caused instability, rather than healthier plants. Aerobic respiration is suppressed.
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