Answer:
I am the kind of ant that's good at math.
I am needed for most animals and hardcover books. What am I?
I have all the knowledge you have. But I am so small that I can fit into your hands. What am I?
What has roots that nobody sees and is taller than trees. Up up up it goes and yet never grows?
As a state in America I am round on both sides and high in the middle.
What never gets any wetter no matter how hard it rains?