Answer:
I cost no money to use, or conscious effort to take part of. And as far as you can see, there is nothing to me. But without me, you are dead.
Describes universities like Harvard and can be poisonous.
Everyone has it and no one can lose it, what is it?
A kind of weather that comes your way, but add a "D" and it will run away
Thousands lay up gold within this house, But no man made it. Spears past counting guard this house, But no man wards it.
What do angels sing in the shower?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?