Q11 of 15 Page 41

Should the handle and bristles of a tooth brush be made of the same material? Explain your answer.

No, the handle and bristles of a tooth brush be made from different material. The handle and bristles of a tooth brush should be made of different materials. The handle of a toothbrush should be hard and strong, so should be made from hard plastic while the bristles should be soft and flexible, so should be made from soft plastic.


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