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Pollution — Biology STD 10 — Question

ICSE BoardEnglish MediumSTD 10BiologyPollution1 Mark
MCQ
Air pollution is caused by:
  • A
    Insecticides
  • B
    Sewage
  • ✓
    Smoke
  • D
    Loud Speakers
✓

Answer

Correct option: C.
Smoke

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