Answer:
By Moon or by Sun, I shall be found. Yet, if there's no light around, I am undone. What am I?
Some will use me, others not. Some have remembered, others forgot. For profit or gain, I'm used expertly. I can't be picked off the ground or tossed into the sea. What am I?
I have roots that no one sees and I am taller than trees. Up, up I go, but never do I grow. What am I?
Draw fire or fill me; I'm still empty.
I have hands but do not hold, teeth but do not bite. Feet I have but they are cold, eyes I have but without sight. What am I?
When I'm born I fly. When I'm alive I lay. When I'm dead I run.