Answer:
I am the thing that is used to make your weight. What am I?
I am a nut with a hole. 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.
With a halo of water and a tongue of wood; stone as skin long I stood.
I am mother and father, but never give birth or nurse. I'm rarely still, but I never wander. What am I?
No matter how little or how much you use me, you change me every month.