Answer:
I am owned by the poor, the rich do not need me. If you eat me, you will die! What am I?
I break down buildings, I crumble mountains but you can't see me. What am I?
I am the kind of soda you must not drink.
I am the kind of nut that is empty at the center and has no shell.
I may only be given but never bought. Sinners seek me but saints do not. (one word).
When is it bad luck to see a black cat?