Alternative Energy - Biofuel

2. organic matter used as a fuel,especially in a power station for the generation of electricity.
5. the chemical processes that occur within a living organism in order to maintain life.
6. the main substance that makes up the cell walls and fibers in plants.
7. the material structure of an individual life form.
10. the process by which plants absorb sunlight and turn that energy into food.
13. a simple nonflowering plant of a large group that includes seaweed and many single celled forms.
15. a colorless,odorless unreactive gas that forms about 78 percent of the earth's atmosphere.

1. a microorganism especially a pathogenic bacterium that causes disease.
3. the variety of life in the world or in a particular habitat.
4. a living thing that can move and eat and react to the world through its senses of sight and hearing.
8. the matter from which a thing is or can be made.
9. a chemical or natural substance added to soil or land to increase its fertility.
11. artificial application of water to the land or soil.
12. a colorless alcohol made from grain and sugar and is volatile and burns easily.
14. a living thing that usually produces seeds and typically haas a stem,leaves,roots and sometimes flower.