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← HistoryDuring China's Warring States period, which consequence resulted when iron plows encountered heavily compacted soil?
A)Reduced hydraulic head efficiency
B)Increased tool fracture probability✓
C)Enhanced bacterial nitrogen fixation
D)Decreased seed germination ratios
💡 Explanation
Increased soil compaction raised resistance, causing increased shear stress concentration at plow defects, therefore the fracture probability increased rather than bacterial fixation, because bacterial nitrogen fixing requires loose soil rather than shear stress.
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