Question: what are the two advantages and two disadvantages of using fossil fuels?
Answer: Well Developed. The technology we use to harness the energy in fossil fuels is well developed. ... 
Cheap and Reliable. Fossil fuels are cheap and reliable sources of energy. ... 
Contribute to Global Warming. Fossil fuels are not green sources of energy. ... 
Non-Renewable. ... 
Unsustainable. ... 
Incentivized. ... 
Accidents Happen.