Over-all mineral level of soil recedes due to:
Correct answer: D. Both (a) & (b)
- A. Leaching only
- B. Utilization by plants
- C. Chemical reactions
- D. Both (a) & (b)
Explanation
Soil minerals decline when plants remove nutrients for growth and when water leaches soluble nutrients below the root zone. Since both processes contribute, the combined option is required.
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