Across
- 3. combining and overlapping of many food chains
- 6. thin zone of the earth that supports all life
- 7. all the organisms living in a certain area
- 8. all the members of one species that live in the same area
- 9. all the living and nonliving parts of an environment
- 11. organism that gets food by eating other organisms
- 12. not dead
Down
- 1. an organism's role in its environment
- 2. model of the flow of energy through an ecosystem
- 4. place where an organism lives
- 5. organism that feeds on dead organisms
- 8. organism that makes its own food
- 10. study of the relationship between living things and their environment