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shared by frasercol99 on 20 Sep 13 - No Cached

Organic matter is one such source. Materials like corn and soybeans have oil extracts that can be converted to ethanol or biodiesel
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more sustainable than petroleum, meaning they can be regrown and remain productive with less negative impact on our ecosystem.
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Some biofuels that provide more long-term benefits may prove too expensive to pursue
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Runge estimated that in the United States alone, some 1.3 billion tons of cellulose material could be harvested for biofuel use. Cellulose is basically fiber, and can be found in things ranging from switchgrass to trees such as hybrid poplar and willow.
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1. Cellulose
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2. Algal Oil
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Because algae are grown in water, they overcome one of the major problems faced by other biofuels -- competition for land with agricultural crops.
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3. Corn
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