Why+does+hair+grey?

__**WHY DOES HAIR GREY?**__

Answer the question below, append new answers to the top of this page. _____ __Response 1:__
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__Additional Responses:__

_ //Please report abuse of this wiki to Louis Cheng at louis.c@calgaryscienceschool.com, and note that any answers listed here are put forth in the spirit of sharing information. Not all answers are verified to be correct, and may include bias or opinion offered by contributing experts. Agents of the Calgary Science School, and the institution as a whole will not be held responsible for the content contributed by the public.//