Hannahprd4

By: Hannah Callahan™ Keywords**
 * Bio-fuels
 * 1) __**ethanol**__
 * 2) __**biodiesel.**__
 * 3) __**fuel**__
 * 4) __**bio-energy**__
 * 5) __**bio-butanol**__
 * 6) __**Biogas**__
 * 7) __**Bioethanol**__
 * 8) __**Micro algae**__
 * 9) __**Biomethanol**__
 * 10) __**wood chips**__


 * Key phrases**


 * 1) __**most common types of biofuels**__
 * 2) __**Brazilian ethanol**__
 * 3) __**bio-energy**__
 * 4) __**marginal cost**__
 * 5) __**switch grass**__
 * 6) __**Straight vegetable oil**__
 * 7) __**Second generation biofuels**__
 * 8) __**Biofuels in developing**__
 * 9) __**Carbon emissions**__
 * 10) __**Bioenergy from waste**__


 * Key Images**