Answer:
They are many and one, they wave and they drum, used to cover a stare, they go with you everywhere.
You shoot me but I don't die. You hang me but I don't die. What am I?
Forward I am heavy backward I am not. What am I?
The more it dries the wetter it gets. What is it?
I am a five letter word. If you remove my first letter I am a form of energy. Remove my first two and I am needed to live. Scramble the last three and you can drink me. What am I?
No matter how little or how much you use me, you change me every month.