 
			 
			MCQOPTIONS
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				| 1. | The transformation of nitrates to gaseous nitrogen is accomplished by microorganisms in a series of biochemical reactions. The process is known as | 
| A. | nitrification | 
| B. | denitrification | 
| C. | nitrogen fixation | 
| D. | ammonification | 
| Answer» C. nitrogen fixation | |