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← Nature & AnimalsWhich outcome results when anaerobic conditions inhibit nitrogen-fixing bacteria in flooded soil?
A)Denitrification decreases, increasing bioavailable nitrogen
B)Nitrates accumulate, increasing toxicity to plants
C)Ammonification accelerates, promoting root growth
D)Nitrogen fixation decreases, limiting plant growth✓
💡 Explanation
Decreased nitrogen fixation limits plant growth because biological nitrogen fixation mediated by bacteria is the primary ammonia source. Therefore plants will have less access to vital bioavailable nitrogen, rather than experiencing changes in nitrification rates or nitrate accumulation.
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