Multiple choice

Which of the following statement is not true, about the balance of components in air?

  1. Carbon dioxide is released by respiration

  2. Oxygen is removed by respiration

  3. Nitrogen is removed by nitrogen fixation

  4. Carbon dioxide is removed by volcanic eruptions

  5. Oxygen is released by photosynthesis
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

It is a wrong statement, because carbon dioxide is released by volcanic eruptions and not removed by it.

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