Across
- 4. autotroph
- 7. breaks down dead organisms
- 10. hunts prey
- 12. range of inherited traits
- 15. diversity in an ecosystem
- 16. is hunted by predator
- 17. amount of area can support until pop. goes down
- 19. abiotic environment
- 20. heterotroph
Down
- 1. factors that cause population decrease
- 2. needed by other organism
- 3. living
- 5. organisms fight for resources
- 6. levels of energy transfer
- 8. web used to show energy transfer
- 9. chain used to show energy transfer
- 11. non living
- 13. used to illustrate energy transfer
- 14. animal response to stimuli
- 18. species that invade an area