Answer:
What dentists battle on a daily basis
I saw the dead bring forth the living. I saw the living bring forth the dead. What did I see?
What goes up when rain comes down?
A standard dimension for sandwiches and rulers
The more you have of me, the less you see. Who am I?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?