Answer:
I am the thing that is used to make your weight. What am I?
I go around in circles, but always straight ahead, never complain, no matter where I am led.
To cross the water I'm the way. For water I'm above I touch it not and truth to say I neither swim nor move.
Iām white; perfect for cutting & grinding. For most animals I am a useful tool.
What has no beginning, end, or middle?
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.