unique features of the nitrogen cyclealthough a cycle pattern is present in both the carbon cycle and the nitrogen cycle, the nitrogen cycle shows two significant differences. first, most of the difficult chemical conversions are made by bacteria and other micro-organisms. without the activities of bacteria, little nitrogen would be available and the world would be a very different place. second, although nitrogen enters organisms by way of nitrogen-fixing bacteria and returns to the atmosphere through the actions of denitri-fying bacteria, there is a secondary loop in the cycle that recycles nitrogen back to producers
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