The most abundant fossil fuel in the world is _______.

Which of the non renewable fuels are best for use in transportation?

Which of the non renewable fuels emits the most CO2?

Which of the non renewable fuels is a worse greenhouse gas then CO2?

Which of the non renewable fuels considered the cleanest burning, thus produces the least CO2, SO2 and NOx emissions?

Which of the non renewable fuels is the most expensive to use and to manage?

Which of the non renewable forms of energy generation resulted in the disasters at Chernobyl and Fukushima?

Which of the non renewable forms of energy resulted in the disasters called the Deep Horizon and Exxon Valdez?

Which of the non renewable fuels requires the least refining to use?

Which of the non renewable fuels are we likely to run out of first?

Which of the following is NOT a drawback of Fracking?

Which of the non renewable fuels is most often used in cogeneration plants that can heat buildings, as well as produce electricity?

The Middle East and Venezuela have the largest proven reserves of which fuel?

The United States has the largest proven reserves of which fuel?

Which non renewable fuel type creates the cheapest electricity?

Petroleum is also known as __________ and Natural Gas is also known as _________.