Across
- 3. organisms that feed on other organisms
- 6. an integrated system of biotic and abiotic factors
- 7. a group of similar organisms that produce fertile offspring when breeding with each other
- 9. avtivly hunting their food
- 12. the pigment that gives plants the green color
- 14. animals that eat plants
- 15. organisms that make their own food
- 16. where plants produce their own food
- 17. a group of organisms of the same species living in a area
- 18. the largest ecological unit on earth
- 19. substances that gives color to something
- 20. study of relationships in a ecosystem
Down
- 1. animals that eat plants and animals
- 2. organic matter in soil
- 4. a group of different populations living in a defined area
- 5. organisms that break down dead animals or plant material
- 8. a relationship where both parties depend on each other for something
- 10. process during which energy is released from glucose
- 11. animals that eat meat
- 13. a combination of different types of soil