Answer:
What can you catch but not throw?
I run through hills. I veer around mountains. I leap over rivers. And crawl through the forests. Step out your door to find me.
A dragon's tooth in a mortal's hand, I kill, I maim, I divide the land.
I beam, I shine, I sparkle white. I'll brighten the day with a single light. I'll charm and enchant all. I'll bring the best in you all. What am I?
I build bridges of silver and crowns of gold. What am I?
Give it food and it will live, give it water and it will die.