What am I?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

I cannot hear or even see, But sense light and sounds there may be, Sometimes I end up on a hook, I can be combined with a book. What am I?

I am a king who’s good at measuring stuff. What am I?

Like a river I flow, and you’re happy I do in vain. There is no escaping from my course, without causing pain. What am I?

Riddles and Answers