How is nitrogen returned to the atmosphere during the nitrogen cycle? A) It is returned to the atmosphere in a process called nitrogen fixation. B) It is returned to the atmosphere through denitrification.

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asked Aug 11, 2019 31.8k views

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How is nitrogen returned to the atmosphere during the nitrogen cycle? A) It is returned to the atmosphere in a process called nitrogen fixation. B) It is returned to the atmosphere through denitrification. C) It is returned to the atmosphere through cellular respiration. D) It is returned to the atmosphere through evapotranspiration. E) It is returned to the atmosphere in a process called photosynthesis.