Across
- 3. organisms that break down dead animals and plant materials
- 6. actively hunt and kill other animals
- 10. something produced in addition to the main product
- 11. organisms that make their own food
- 12. a group of different populations living in a defined area
- 13. a way to show how energy is passed from one organism to another in the environment
- 15. a relationship in which both parties depend on each other for something
- 17. animals that eat plants
- 20. animals that eat both plants and animals
- 21. animals that feed on carrion
- 22. an integrated system of biotic and abiotic factors
Down
- 1. a way to show how different food chains are connected in the environment
- 2. the angle of the ground relative to the horizontal
- 4. the chemical process in which plants make their own food
- 5. an energy level in an environment
- 7. organic matter in soil
- 8. the height above sea level
- 9. group of organisms of the same species that live in a defined area and are able to breed
- 14. animal that eats meat only
- 16. organisms that feed on other things
- 18. the study of the relationships in an ecosystem
- 19. the largest ecological unit on earth