5. It hurts when someone pulls your hair. But it does not when you go for a haircut
or your father shaves his beard. Why?
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Answer: Hair is made up of proteins, which are dead cells. They are attached to the scalp with living cells, from where they grow. So, while getting a haircut a person does not feel pain because dead cells are being cut, but when it is pulled from scalp the living cells are also being pulled along.
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