55. Denitrifying bacteria 1) Decompose nitrogen compounds to nitrogen gas 2) Compose nitrogen compounds from atmospheric nitrogen gas 3) Have a role in nitrogen cycle 4) Both 1 & 3
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Denitrification is the reduction of nitrates back into nitrogen gas (N2), completing the nitrogen cycle. This process is performed by bacterial species such as Pseudomonas and Paracoccus, under anaerobic conditions. They use the nitrate as an electron acceptor in the place of oxygen during respiration.
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