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Nitrogenase activity is crucial for biological nitrogen fixation, a process carried out primarily by certain bacteria and cyanobacteria. Several factors influence the efficiency of this enzyme complex, which is responsible for converting atmospheric nitrogen (N₂) into ammonia (NH₃). Temperature plays a significant role in nitrogenase activity. Each nitrogen-fixing organism has an optimal temperature range for enzyme function. At temperatures too high or ____ ______ __________ ______ __________ ___ __________ _______.
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