In the future, you may fill up your car with anything from french fry grease to algae-based biodiesel. As oil prices climb higher and oil wells sink lower, the race for viable, biologically based alternative fuels is on. Test your knowledge of biofuels in this quiz.
Question 1 of 10
All biofuels are made from:
Question 2 of 10
Which of the following is not a potential biofuel?
Question 3 of 10
With B20 biodiesel, the "20" indicates the percentage of what?
Question 4 of 10
Ethanol refers to any biofuel made from:
Question 5 of 10
What's the primary source of biodiesel?
Question 6 of 10
When was vegetable oil first proven as a fuel source?
Question 7 of 10
When were algae first explored as a fuel alternative?
Question 8 of 10
How many gallons of biodiesel could a 100-acre (40-hectare) algae biodiesel plant potentially produce in a year?
Question 9 of 10
Which of the following is not one of the criticisms of biofuel?
Question 10 of 10