Answer:
I am an object which is used in baseball during the day I can't be seen at all
Send poorly behaved children to me and let them sit here.
I'm white and I'm used for cutting and grinding. When I'm damaged people usually remove me. What am I?
Take off my skin I won't cry but you will. What am I?
There's not a kingdom on the earth I haven't traveled over and over and though I know not whence my birth yet when I come you know my roar. I through the town do take my flight and through the fields and meadows green and whether it be day or night I neither am nor can be seen.
No matter how little or how much you use me, you change me every month.