The correct answer is C. natural gas.
Natural gas is a fossil fuel and not a renewable energy source, while solar, hydroelectric, and biofuel are all considered renewable energy sources.
All of the following are sources of renewable energy except __________ energy.
A.
solar
B.
hydroelectric
C.
natural gas
D.
biofuel
Please select the best answer from the choices provided
A
B
C
D
1 answer