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R

Ravi Chauhan • 11.26K Points
Tutor II

Q. ‘Ozone-hole’ means

  • (A) a large sized hole in the ozone layer
  • (B) thinning of the ozone layer
  • (C) small holes scattered in the ozone layer
  • (D) thickening of ozone in the ozone layer
Correct Answer - Option (B)
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