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Organisms and Populations — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYOrganisms and Populations1 Mark
MCQ
Deep black soil is productive due to high proportion of:
  • A
    Sand and zinc.
  • B
    Gravel and calcium.
  • C
    Clay and humus.
  • D
    Silt and earthworm.
✓

Answer

  1. Clay and humus.

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