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

  • question_answer
      (a) What are the two forms of oxygen found in atmosphere? (b) State two effects of depletion of ozone layer in the atmosphere.

    Answer:

       (a)  and (b) Harmful effects of ozone layer depletion are (i) Depletion of ozone layer allows the entry of harmful ultraviolet radiations on the Earth. UV radiations cause skin cancer, damage to eyes, etc. (ii) Ozone layer depletion may lead to variation in rainfall, ecological disturbances, etc.


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