dead skin cells
yah
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.
Hair and nails are made primarily of calcium.
Yes
Finger nails (and toe nails) are made of keratin.
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
There are many records of nails in history. Not one particular person created them. Many different peoples created their own versions of nails for construction and other tasks.