Answer:
I am the greatest teacher out of them all, but alas in the end I kill my pupils.
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.
It is a part of us, and then replaced. It escapes out bodies, to a better place. The world becomes its sizeable home. Its passions unrestraint, the planet it roams.
What has a bottom right at the top?
You can spin, wheel and twist, but this thing can turn without moving. What is it?
What do angels sing in the shower?
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?