Answer:
What is a five-letter word that has brain in it?
Two in a whole and four in a pair. And six in a trio you see. And eight's a quartet but what you must get. Is the name that fits just one of me?
The moon is my father. The sea is my mother. I have a million brothers. I die when I reach land.
What kind of nut is empty at the center and has no shell.
Man walks over, and man swims under. In times of war, it can be burned asunder. What is it?
I have two eyes in the front and a lot of eyes on my tail