Answer:
You shoot me but I don't die. You hang me but I don't die. What am I?
What always ends everything?
I lose my head in the morning and regain back it at night.
A trail, a union, together tied. Come across me and you will find you cannot change the course I'm on. Without me you cannot travel on. What am I?
Taken from a mine and then locked up in a wooden case. I am used by students everyday.
When you take away the whole from me there is always some left.