 
			 
			MCQOPTIONS
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				| 1. | Ammonia or ammonium is oxidized to nitrite followed by the oxidation of nitrite to nitrate is called ____________ | 
| A. | Nitrogen fixation | 
| B. | Nitrification | 
| C. | Denitrification | 
| D. | Nitrogen assimilation | 
| Answer» C. Denitrification | |