Biosphere

2. Chain a hierarchical series of organisms each dependent on the next as a source of food
3. animals that only eat meat
4. a major ecological community type
7. groups of individuals belonging to the same species that live in the same region at the same time
11. a process where green plants use sunlight to synthesize foods with carbon dioxide and water. Oxygen being a byproduct
12. the branch of biology that deals with the relations of organisms to one another and to their physical surroundings
13. an organism deriving its nutritional requirements from complex organic substances
14. An autotrophic organism that serves as a source of food for other organisms in a food chain
15. the total mass of organisms in a given area or volume
16. a substance that provides nourishment essential for growth and the maintenance of life
17. a biological community of interacting organisms and their physical environment
18. animals that eat both meat and green foods

1. Level each of several hierarchical levels in an ecosystem
3. interacting group of various species in a common location
4. the region that is occupied by living organisms
5. Bloom a delicate powdery surface deposit on certain fresh fruits, leaves, or stems
6. a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding
8. organisms that can form nutritional organic substances from simple inorganic substances
9. synthesis of carbohydrate from carbon dioxide and water; limited to certain bacteria and fungi
10. an organism that decomposes organic material
13. animals that only eat green foods