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O-LevelBiologyEcology & Environment5090/12 · Oct/Nov 2020 · Q301 Mark

The diagram shows the nitrogen cycle. Which stage is carried out by nitrifying bacteria?

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AA

BB

CC

DD

✓ Correct answer

B: B

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About this question

Topic: Ecology & Environment, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2020 Paper 1 Variant 2, question 30.

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