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Biofuel's Downsides
by Staff
How well do you know your biofuels? Better yet, how well do you know the factors that may keep them from being put to use on a large scale? Try this quiz to test your knowledge about the downsides of popular biofuels.

What does it cost to convert a car to run on biodiesel?

  • Nothing; biodiesel is identical to petroleum diesel.
  • less than $100
  • It depends on the vehicle.

How much pollution is created by fertilizer runoff worldwide?

  • There's no way to tell.
  • 30 percent of the world's water pollution
  • 5.6 billion gallons of nitrates

How many people in the world live on only $1 to $2 per day?

  • 100 million
  • 500 million
  • 800 million

What's the gel point of biodiesel?

  • higher than that of petroleum diesel
  • the same as petroleum diesel
  • lower than that of petroleum diesel

How much energy does it take to produce a gallon of biodiesel?

  • half as much energy as is produced by the biodiesel
  • one third as much energy as is produced by the biodiesel
  • anywhere from 20 to 100 percent more energy than the biodiesel contains

Which country produces the most biofuel?

  • The United States
  • Germany
  • Both are leaders in different types of biofuel.

How does biofuel compare to petroleum's energy storage ability?

  • It's better.
  • It's worse.
  • It depends on the fuel source.

What is monoculture?

  • a culture in which everyone eats the same foods
  • the practice of growing one heavily concentrated crop
  • a method of agriculture that centers on one community