Answer:
I have no bed to sleep and no palace to live. I don't have a single coin but I am known as king. What am I?
What can you catch but not throw?
I have three heads. Cut off one I become stronger. Cut off two I become ten.
What goes through a door but never goes in and never comes out?
I have roots nobody sees. I am taller than trees. Up up I go but I never grow.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.