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Environmental Issues — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYEnvironmental Issues1 Mark
MCQ
Ozone hole refers to:
  • A
    Hole in ozone layer
  • ✓
    Reduction in thickness of ozone layer in the stratosphere.
  • C
    Reduction in thickness of ozone layer in the troposphere.
  • D
    Increase in concentration of ozone.
✓

Answer

Correct option: B.
Reduction in thickness of ozone layer in the stratosphere.

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