Which compound decay slowly______________________?
Correct answer: B. Lignin
- A. Amino acid
- B. Lignin
- C. fats
- D. Cellulose
Explanation
Lignin has a complex aromatic structure and resists microbial breakdown, so it decays more slowly than amino acids, fats, and cellulose. This resistance also helps lignin-rich residues contribute to stable soil organic matter.
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