A. are black in colour
B. retain air, moisture and humus
C. are rich in mineral nutrients
D. are rich in humus only
Correct Answer:
Option B – retain air, moisture and humus
A. are black in colour
B. retain air, moisture and humus
C. are rich in mineral nutrients
D. are rich in humus only
Correct Answer:
Option B – retain air, moisture and humus
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