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Nitrogen cycle of sewage, is____________________?

Liberation of ammonia-formation of nitrites-formation of nitrates-liberation of nitrogen
BLiberation of nitrogen-liberation of ammonia-formation of nitrites- formation of nitrates
CLiberation of nitrogen-formation of nitrates-formation of nitrites-liberation of ammonia
DFormation of nitrates-formation of nitrites-liberation of nitrates-liberation of nitrates

Correct Answer: A. Liberation of ammonia-formation of nitrites-formation of nitrates-liberation of nitrogen

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