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"There are several advantages to using biofuels over fossil fuels. If you think you know all there is to know about these eco-friendly fuel options, take our quiz to see how &amp;quot;green&amp;quot; savvy you really are."^^<http://www.w3.org/2001/XMLSchema#string>
<http://auto.howstuffworks.com/fuel-efficiency/biofuels/benefits-of-biofuels-quiz14.htm>