Which of these is a form of nonrenewable energy?
a. biomass
b. natural gas
c. solar radiation
d. wind?

~Hello there! ^_^

Your question: Which of these is a form of non-renewable energy..?

Your  Natural gas is a form of non-renewable energy. Natural gas is considered is as a fossil fuel and obviously fossil fuels are non-renewable. Thus, your answer is natural gas.

The answer is option B.

Hope this helps! :D

Answeroil-shale;