Answer:
I keep growing and am practically indestructible. I get eaten, but always come back. I survive cold and lie everywhere. You see me everyday. What am I?
My snake-like body cracks and burns. I cause pain but pleasure too. What am I?
I am the kind of nut that is empty at the center and has no shell.
I have a head and a tail but my eyes can never see my tail.
I row quickly with four oars but never comes out from under my own roof.
When you take away the whole from me there is always some left.