Biofuel

3. a microorganism especially a pathogenic bacterium that causes disease.
6. a colorless, odorless unreactive gas that forms about 78 percent of the earth's atmosphere.
8. a chemical or natural substance added to soil to increase its purity.
10. the process by which plants absorb sunlight and turn that energy into food.
11. organic matter used as a fuel, in a power station for the generation of electricity.
12. a living mammal other than a human being.
13. the matter from which a thing is or can be made.

1. artificial application of water to the land or soil.
2. the variety of life in the world or in a particular habitat.
4. material structure of any living thing.
5. a colorless alcohol made from grain and sugar and is volatile and burns easily.
7. the main substance that makes up the cell walls and fibers in plants.
9. the chemical processes that occur within a living organism in order to maintain life.
10. it comes from a seed and typically has stem, leaves, roots and sometimes flower.
14. a simple nonflowering plant of a large group that includes seaweed and many single celled forms.