The process of transformation of raw organic matter into humus:
Correct answer: A. Humification
- A. Humification
- B. Horizonation
- C. Illuviation
- D. Calcification
Explanation
Humification is the biological and chemical transformation of raw plant and animal residues into relatively stable humus. Calcification and illuviation are soil-forming processes, not the formation of humus itself.
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