Agriculture · Soil Physics and Chemistry
Consider the following statements regarding soil composition: A. A typical healthy soil contains 25% water and 25% air by volume. B. Soil organic matter constitutes around 15% of soil volume. C. Humus increases soil structure stability and water-holding capacity. D. Soil inorganic (mineral) matter contributes around 45% of soil volume. Which of the following combinations is correct?
- 1A and B only
- 2B, C, and D only
- 3A, C, and D only✓
- 4A, B, C, and D
Correct answer
A, C, and D only
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