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Nature & Animals

Which 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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