4th Class Science Our Body Question Bank Teeth and Microbes

  • question_answer The figure below shows a tooth that is decayed. What causes the decay in a tooth?

    A)  Eating too many nuts

    B)  Brushing teeth regularly

    C)  Not exercising enough

    D)  Bacteria in the mouth

    Correct Answer: D

    Solution :

    Bacteria in the mouth cause decayed teeth or cavities in tooth.


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