I spin without walking, sing without a mouth. I keep what you said, and also what you played. I can be broken, beaten, or set straight, stored on shelves or chased in a race.

Change my first, and I’m a hardened substance that may have ancient insects or plants in it. Add a letter instead, and I become a person that belongs to a group. Make sure you throw water on me when you’re done. Smokey says only you can prevent forest fires!

I’m a tiny cut, a little groove, On belts, trees, or maybe your shoe. I help things fit or show your score What am I that’s never a bore?

I am an odd number Take away a letter, and I become even What number am I?

An endless flow, A boundless river, I crumble empires, I stumble kings, before my might, even the mightiest quiver