Answer:
I have an eye but cannot see. I take time to generate and can dissipate in seconds. What am I?
I can fall off a building and live, but in water I will die. What am I?
I am round. I have only one line. Circle is not my name indeed. What am I?
I am the best thing that can happen after a stick hits a ball.
Flat as a leaf round as a ring. I have two eyes but can't see a thing.
No matter how little or how much you use me, you change me every month.