Which of the following statements about biogeochemical cycles is correct?

Practice question

Question

Which of the following statements about biogeochemical cycles is correct?

Options

Choose one · Correct answer highlighted

Nitrogen fixation converts nitrogen gas into ammonia. Correct Denitrification increases soil nitrogen levels. The phosphorus cycle includes an atmospheric component. The carbon cycle does not involve respiration.

Explanation

Nitrogen fixation by bacteria converts atmospheric nitrogen (Nâ) into ammonia (NHâ), making it available for plant uptake.

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