Answer:
What goes around and around the wood, but never goes into the wood?
When it is alive we sing, when it is dead we clap our hands. What is it?
At first, I am nothing. Add something to negate. Add again to oppose. Add again to find the time to draw. Add once more to find nobody at all.
I am believed to be only one dimensional, and tinier than anything can be, and there are many who say that I am the basis of all that we see. What am I?
What kind of nut is empty at the center and has no shell.
Forward Iām heavy, but backwards Iām not.