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