The fertility level of any soil is generally determined by:
Correct answer: C. All of these
- A. Aeration and hydration
- B. Humus and mineral contents
- C. All of these
- D. Humus, mineral and hydration level
Explanation
Soil fertility depends on nutrient-bearing minerals and organic matter such as humus, together with adequate air and water conditions for roots and soil organisms. Therefore the combined factors listed in the options are relevant.
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