MCQOPTIONS
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				| 1. | 
                                    In the process of nitrogen fixation, which of the following microorganism is involved? | 
                            
| A. | Symbiotic microorganisms only | 
| B. | Non symbiotic microorganisms only | 
| C. | None of the above | 
| D. | Non symbiotic and symbiotic microorganisms only | 
| Answer» E. | |