Answer:
I can fall off a building and live, but in water I will die. What am I?
I'm not a bird, but I can fly through the sky. I'm not a river, but I'm full of water. What am I?
I am used when you jump off a bridge for fun.
What gets bigger the more you take away?
I can fly but I have no wings. I can cry but I have no eyes. Wherever I go darkness follows me.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.