Answer:
What is at the end of a rainbow?
I am all around you but you cannot see me. I have no throat but you can hear me. Valued during summer but despised in the winter.
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?
Forward I am heavy backward I am not. What am I?
Use me to reward good behavior.
A man goes out in heavy rain with nothing to protect him from it. His hair doesn't get wet. How does he do that?