Which is anaerobic nitrogen fixer

Options :
  1. Azotobacter
  2. Beijerenckia
  3. Clostridium
  4. none of these

Answer and Explanation :-

Answer: Option 3


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For if the darkness and corruption leaveA vestige of the thoughts that once I had,Better by far you should forget and smileThan that you should remember and be sad.
-Christina Rossetti Poems of Christina Rossetti