Answer:
I'm white and I'm used for cutting and grinding. When I'm damaged people usually remove me. What am I?
What do you call a pig that is no fun to be around?
I am round as an apple, deep as a cup. All the King's horses can't pull me up. What am I?
I am the beginning of the end and the end of time and space. I am essential to creation and I surround every place.
There's a one-story house in which everything is green. Green walls green windows green doors. What color are the stairs?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.