Answer:
In the sun it likes to play; In the rain it goes away; Walk or run it always follows; In the mud it always wallows.
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.
Without this, H2O would just be 2O
I'm a ring of sliced onion dipped in batter and then deep fried.
The more you have of me, the less you see. Who am I?
It is something you will never see again.