Keratin, a fibrous protein.
diamond
Carpet nails are generally made of mild steel.
iron nails are nails made up of iron
Finger nails are made of a protein called keratin.
A substance made entirely of one type of molecule and crystal structure. Sugar, common salt, and sulphur would all be good examples.
Hair and nails are made primarily of calcium.
Finger nails (and toe nails) are made of keratin.
Yes
Nails are NOT made out of cartilage. Nails are made out of keratin, the same structural component that makes up hair. Both keratin and cartilage are types of structural proteins, but they are not related.
No they definitely don't and can't, false nails are usually made of acrylic.
Nails were historically made of iron by a local blacksmith. Nowadays, most nails are usually made in factories from steel wire, although they could also be made of aluminium, brass, or many other metals.
hard hair or keratin which is made of the same substance as hair