Answer:
I run through hills. I veer around mountains. I leap over rivers. And crawl through the forests. Step out your door to find me.
I'm not a bird but I can fly through the sky. I'm not a river but I'm full of water.
After you go through a fall, I will take over. All life will stall, or at least grow slower. What am I?
The more you take away the bigger I get. What am I?
I am taken from a mine and shut in a wooden case from which I am never released. Yet I am used by almost everybody. What am I?
Runs over fields and woods all day. Under the bed at night sits not alone, With long tongue hanging out, Resting at your feet until we go for a walk