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Safe Disposal of Wastes — BIOLOGY STD 9 — Question

ICSE BoardEnglish MediumSTD 9BIOLOGYSafe Disposal of Wastes1 Mark
MCQ
Sewage sludge is used as
  • A
    manure
  • B
    biogas generators
  • ✓
    both manure and biogas generators
  • D
    tipping
✓

Answer

Correct option: C.
both manure and biogas generators

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