In the Nitrogen cycle, what is the role of "denitrifying bacteria"?
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To convert Nitrogen gas into nitrates.
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To break down proteins into ammonium.
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To convert nitrates back into Nitrogen gas.
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To fix Nitrogen into plant roots.
📝 Detailed explanation
Denitrifying bacteria thrive in anaerobic conditions (waterlogged soil) and return nitrogen to the atmosphere, reducing soil fertility.
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