QuestionEcology / nitrogen cycle
Nitrogen cycle is one of the most important microorganisms-mediated chemical reactions in aquatic and soil environments. In this context consider the following statements :
- Nitrogen fixation is the process of oxidising NH₃ to NO₃⁻.
- Nitrification process causes reduction of NO₃ and NO₃⁻, to NO₂⁻, followed by recycling of N₂ to the atmosphere.
- Denitrification converts molecular N₂ into a fixed form as an organic nitrogen.
How many of the statements given above is/are correct ?
- (a) 1
- (b) 2
- (c) 3
- (d) None
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