Answer:
What is a five-letter word that has brain in it?
I am nothing really at all, Yet I am easily foundΝΎ Ignore me at your own peril, and you might end up crowned!
My teeth are sharp, my back is straight, to cut things up it is my fate.
Never alive but practically extinct. How we miss the letters pressing the ribbon of ink. What is it?
White fat and fluffy, May even look like a puppy. Seems heavy but is light, Floats about without a worry, But if it turns dark you have to hurry!
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.