The composition of soil air is affected by:
Correct answer: C. All of these
- A. Pore size
- B. Soil organisms
- C. All of these
- D. Type of roots
Explanation
Soil-air composition depends on how easily gases move through pore spaces, on microbial and other organismal respiration, and on root respiration. Thus pore size, soil organisms, and root type all influence it.
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