Does coal provide fuel completele renewable?

Answer 1

Hardly. Coal is a fossil fuel, and thus, a limited resource, since it takes millions upon millions of years for coal to form from dead trees that fell into swampy ground. Humans burn coal at a rate much faster than it can form, and will likely run out of coal, if consumption of the resource continues at the current rate, before the end of the twenty-second century, and possibly before the end of the twenty-first century. And once it's gone, it doesn't come back. Unless you're willing to wait a few million years while some trees fossilize. We got time.