Answer:
Poor people have it. Rich people need it. If you eat it you die. What is it?
What goes through towns and over hills but never moves?
Noah survived one and it was great
What must you give before you can keep it?
It carries paper of the most important sort but also plastic, I'm glad to report. What is it?
Walk on the living, they don't even mumble. Walk on the dead, they mutter and grumble.