Answer:
No matter how little or how much you use me, you change me every month.
I fly yet I have no wings. I cry yet I have no eyes. Darkness follows me. Lower light I never see.
Part carbon, part water, I am poison to the fishes. Many falsely claim my name, I am the pause that refreshes. What am I?
I can fly but I have no wings. I can cry but I have no eyes. Wherever I go, darkness follows me. What am I?
I am the kind of a tree that is carried in your hand. What am I?
Brings the sky a lot closer.