The soil air contains a number of gases ______________ & water vapours:
Correct answer: A. All of the above
- A. All of the above
- B. Oxygen
- C. Carbon dioxide
- D. Nitrogen
Explanation
Soil air occupies the pore spaces not filled with water and contains nitrogen, oxygen, carbon dioxide, and water vapour. Their proportions differ from atmospheric air because of root and microbial respiration.
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