Answer:
What is it which builds things up? Lays mountains low? Dries up lakes, and makes things grow? Cares not a whim about your passing? And is like few other things, because it is everlasting?
I'm white, I'm round, but not always around. Sometimes you see me, sometimes you don't.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.
Always old, sometimes new. Never sad, sometimes blue. Never empty, sometimes full. Never pushes, always pulls.
A shimmering field that reaches far. Yet it has no tracks, And is crossed without paths.
Do what he says and you'll be fine, don't and you lose the game.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?