Answer:
I tremble at each breath of air, and yet can heaviest burdens bear. What am I?
When I am caught, I am thrown away. When I escape, you itch all day. What am I?
My first though water cures no thirst my next alone has soul and when he lives upon my first he then is called my whole.
I have a lot to say but can't be heard because I can't speak one single word. What am I?
I am born in fear raised in truth and I come to my own in deed. When comes a time that I'm called forth I come to serve the cause of need.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.