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In the marine nitrogen cycle, _________ performs nitrogen fixation.

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In the marine nitrogen cycle, _________ performs nitrogen fixation.

(a) Cyanobacteria

(b) Nitrobactor

(c) Pseudomonas

(d) Diazotrophs

The question was posed to me in an interview for internship.

I would like to ask this question from Various Cycles of Environment topic in portion Other Major Topics in Civil Engineering of Basic Civil Engineering

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Right choice is (a) Cyanobacteria

For explanation: Diazotrophs are used to perform nitrogen fixation in normal nitrogen cycle. Nitrobactor is used for nitrification and Pseudomonas for denitrification.

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