9th Class Science Natural resources Question Bank 9th CBSE Science Natural resources

  • question_answer
      What is ozone hole? How it is caused?

    Answer:

       The depletion of ozone gas in ozone layer led to the hollow gap in the ozone layer called as ozone hole.          It is formed, when the harmful chemicals like chlorofluorocarbons (CFCs) are released into air and accumulated in the upper atmosphere. Then, they react with ozone resulting in reduction of the ozone layer forming a hole.    


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