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← HistoryWhich long-term consequence resulted from the Three Sisters agricultural method?
A)Reduced long-term soil nitrogen levels✓
B)Widespread irrigation system adaptation
C)Vulnerability increased to specific blight
D)Increased dependence animal-based soil fertilization
💡 Explanation
Continuous maize cultivation without replenishment leads to soil depletion because crop rotation & Companion Planting depletes available nitrogen. Nitrogen fixation by legumes wasn't fully emphasized; therefore, soil suffered rather than improving through diverse nutrient cycling.
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