Across
- 2. all food chains in one
- 5. When new land forms
- 6. Someone gives off the nutrients needed for other animals
- 9. A group of species that are commonly found
- 11. The amount of one species in one place
- 13. Environment where different organisms live
- 15. Layer with all living organisms living on it
- 17. Key that helps you figure out animals
- 18. variety of species in the world
Down
- 1. biological community formed where no life existed
- 3. Animals choose who they want to breed with whoever they want
- 4. relationship between two organisms but one is benefitted
- 7. Study of the Environment
- 8. Living organisms
- 10. when two organisms work together
- 12. Non-living organisms
- 14. Association between species
- 16. Someone that eats the producer