Nitrogen-Fixing Bacteria and Nitrifying Bacteria Convert Atmospheric Nitrogen into Different

question 45

Multiple Choice

Nitrogen-fixing bacteria and nitrifying bacteria convert atmospheric nitrogen into different compounds of nitrogen such as:
I. ammonium ion
II. ammonia
III. nitrate ion
IV. nitrite ion.
Which of the following is the correct sequence of formation of the nitrogen compounds?

• A) I, II, III, and IV
• B) II, I, IV, and III
• C) II, I, III, and IV
• D) I, II, IV, and III

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