Answer:
I am a fire's best friend. When fat, my body fills with wind. When pushed to thin, through my nose I blow. Then you can watch the embers glow.
A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?
We are all around, yet to us you are half blind. Sunlight makes us invisible, and difficult to find.
What is lighter than what it is made of?
Long and think, red within, with a nail at the end.
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.