Commonly, if you have not experienced trauma or accidents involving your fingernails, the culprit could be fungal infections. Sometimes, bacteria can also be a cause.
Nails (and finger nails) have volume.
Finger nails are made of a protein called keratin.
No one invented finger nails.
Actually, finger nails contain protein (called "keratin").
By chewing your fingernails, also by ripping and scratching your nails on rough objects like sandpaper. You also have to remember to use a nailfiller very good.
no
By system, you mean category.. I'm not sure if you mean finger nails or like tool nails, so I'll give you both. Finger nails: Body parts Tool nails: Hardware
diptheria
Finger nails (and toe nails) are made of keratin.
For finger nails :no,the other nails are iron , copper, etc but not plastic
Nails
Me? i bite my finger nails.