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← HistoryWhich agricultural challenge did chinampa construction primarily overcome?
A)Unpredictable seasonal flood inundation✓
B)Nutrient depletion from loess soils
C)Insufficient sunlight reaching lower crops
D)Excessive soil erosion on steep slopes
💡 Explanation
Chinampas, raised beds in shallow lake beds or marshes, combat periodic flooding via hydraulic lift . The elevation keeps crops above floodwaters because buoyancy forces, rather than rainfall, drive seasonal flooding, so the water levels rise and inundate crops.
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