CBSE BoardEnglish MediumSTD 12 ScienceBiologySTD 12 - 11. organisms and populations1 Mark
MCQ
O soil layer is rich in
A
Minerals
✓
Humus
C
Litter
D
None of these
✓
Answer
Correct option: B.
Humus
b O region in soil contains organic matter in different stages of decomposition and microorganisms like bacteria, fungi, Actinomycetes are frequently found. The decomposed matter is called humus.
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