#537 Why do fingernails keep growing?
Why do fingernails keep growing? So that we always have them. If they didn’t keep growing, they would get worn down and be of no use. How do nails grow? Nails are made of keratin, which is the same substance our hair is made of. Keratin is a fibrous protein that is very tough and […]
#537 Why do fingernails keep growing? Read More »