Answer:
I'm white and I'm used for cutting and grinding. When I'm damaged people usually remove me. What am I?
Everyone in the world needs me. They generously give me but never take me. What am I?
What has a ring but no finger?
I am useless when together but useful when I am broken apart. What am I?
I like to twirl my body but keep my head up high. After I go in everything becomes tight
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?