Question

Which of the following is a nonrenewable resource? a. hydropower b. biomass c. geothermal power d. coal

Answer 1

The correct answer is D. Coal

It is non renewable because it will not come into existence on its own if we don't mine it. Other resources will replenish over time.

Answer 2

A).  Hydropower is continually replenished by the sun.

b).  Biomass is replenished when things die, which they keep on doing.

c).  Coal is replenished, but you need dead large animals and millions of years.
      On the scale of human lifetimes, coal is not renewable.