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  3. 5th Class
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5th Class Science Sample Paper Science Olympiad Model Test Paper-20

  • question_answer
    What may be the consequences of water pollution?

    A) Killing of aquatic animals

    B) Disturbance in the ecological balance

    C) Disturbance in the food chain

    D) All of these

    E)  None of these

    Correct Answer: D

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