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← Nature & AnimalsWhich outcome occurs when a flooded rice paddy experiences depleted oxygen levels?
A)Enhanced nitrogen fixation by anaerobic bacteria✓
B)Increased methane production by methanogens
C)Reduced decomposition rate from aerobic processes
D)Accumulation of toxic levels hydrogen sulfide
💡 Explanation
Enhanced nitrogen fixation occurs because anaerobic bacteria use nitrogenase, rather than oxygen, to fix atmospheric nitrogen. Therefore increasing rice yields occurs, rather than decreased fixation from inhibited aerobic pathways.
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