He bites them because his old instincts start to rise. He is also very stressed and starts this habit again. He says he quit it when he was younger but now is re-starting.
Ralph may bite his fingernails due to stress, anxiety, or as a habit. Biting nails can be a coping mechanism for managing emotions or boredom. It's important to address the underlying reasons for the nail-biting behavior to help Ralph find healthier ways to cope.
Yes, risk of electric shock is increased with bitten nails. This is because nails, which do not conduct electricity, would have shielded the finger from contacting the naked wire. Also, bitten nails are sometimes wet with saliva, further increasing the risk.
he is homesick, and stressed
relive stress of being homesick
Ralph has bitten his fingernails, because he is a nervous person. It is to help him cope with stress and his nervousness.
severely bitten nails
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").
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
Yes. During "The Return of the King". It was bitten off by Gollum.