Question

Explain why the hadle and bristle of a tooth brush should not be made of the same material

Answer 1

the handle and the bristle of a toothbrush should not be made of same material because the handle of the toothbrush should be hard and whereas the bristle should be strong and flexible and soft because if the bristles are not soft it will damage our gums .....
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Answer 2

Answer:

The handle and bristles of a tooth brush should be made of different materials. The material  which is used for making toothbrush handle should be hard and flexible; because the handle  has to withstand lot of stress and has to reach every corner of mouth. The material which is  used for making bristles should be soft, flexible yet durable; because the bristles should not  damage the tooth or gum but should last longer.

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