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  3. 6th Class
  4. General Knowledge
  5. Earth and its Environment

6th Class General Knowledge Earth and its Environment Question Bank Earth and Its Environment

  • question_answer
    Air pollution on the roads can be reduced by_______.

    A)  Discouraging the use of CNG in vehicles

    B)  Planting trees on roadsides

    C)  Reducing the number of vehicles on the road

    D)  Both B and C

    Correct Answer: D

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