#original riddle

And my body is bestrewn with tiny, winding streams

In its center, there moves a target;

An apprentice, a student

Though you can easily see through me.

I fill oceans and tear up earth.

When I face the sky

If I turn still, it would mean harm

Or that I have something clutched in my arm

I keep a car running

When I am struck

For study and appreciation

I help you take the smallest things

But I always fall, low

I am for you to choose,

I typically have a cost

I am often bruised, and if I’m not used, then I am tossed

Who abandons me in the cold.

But before I'm dead and gone

My neck supports no head.

You can't tie my bow