Answer:
you can throw me away but I will always be coming back
I have all the knowledge you have. But I am so small that I can fit into your hands. What am I?
I begin and have no end and I end all that begins. What am I?
I am whole but incomplete. I have no eyes yet I see. You can see and see right through me. My largest part is one fourth of what I once was.
What kind of tree can you carry in your hand?
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?