Answer:
No matter how little or how much you use me, you change me every month.
I am black within and red without; with four corners round about. What am I?
I am rubber you can eat!
You can build or destroy. Let creativity soar but be careful at night.
You bind me and I walk. You loosen me and I stop. 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.