Answer:
I am clean when Iām black dirty when Iām white.
What has a head but never weeps a bed but never sleeps can run but never walks and banks but no money?
If a man carried my burden, he would break his back. I am not big but leave silver in my tracks. What am I?
I'm white and used for cutting and grinding. When I'm damaged, humans usually remove or fill me. For most animals I am a useful tool. What am I?
Flat as a leaf, round as a ring; have two eyes, can't see a thing. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.