Answer:
You heard me before and then again. Afterward I die until you call me again.
I always have to work with something in my eye. What am I?
Some try to hide, some try to cheat, but time will show we always will meet.
Only one color, but not one size, stuck at the bottom, yet easily flies. Present in sun, but not in rain, doing no harm, and feeling no pain. What am I?
I go around in circles, but always straight ahead. Never complain, no matter where I am led. What am I?
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.