Answer:
You hear me speak, for I have a hard tongue. But I cannot breathe, for I have not a lung. What am I?
People need me yet they give me away every day.
I am always around you but often forgotten. I am pure and clean most time but occasionally rotten.
I begin and have no end. Eventually, I will be the ending of all that has begun. What am I?
I make a loud sound when I'm changing. When I do change I get bigger but weigh less. What am I?
No matter how little or how much you use me, you change me every month.