As a result of which treaty, ozone hole in Antarctica is slowly healing?

Correct answer: C. Montreal protocol

  • A. Koyoto protocol
  • B. Ottawa treaty
  • C. Montreal protocol
  • D. Oslo Accord

Explanation

The Montreal Protocol controls ozone-depleting chemicals such as CFCs, allowing stratospheric ozone to recover gradually. The Kyoto Protocol mainly addressed greenhouse-gas emissions.

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