Using Non-Food Crops to Make Biofuels (7)of cellulose are made up of sugars. These form of (9). Ône common A major constituent of green plants is cellulose. The the (8)of plants. Ethanol could be produces by extracting the sugars and allowing them to North America plant that could be used in this method is productive source of ethanol than currently being used for agriculture and is not (10). Some scientists believe that this would be a more (11). Additionally, the source plant materials could be grown in ground which is not (12) valuable.

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