Across
- 4. Symbiosis beneficial to both organisms
- 6. The hunting of other animals
- 7. The number of animals in an area
- 8. The action of breathing
- 12. The maximum population of a species in a community
- 15. A living factor in an ecosystem
- 16. The first species to an enter environment after primary succession
- 18. A meat eating organism
- 19. An animal that eats plants
- 20. Changing to survive your environment
- 22. The position of an organism in the ecosystem
- 23. A similar group of animals that can reproduce with each other
- 25. Abiotic and biotic factors working with each other
- 26. A form of symbiosis in which neither animal is harmed or benefits
- 27. An organism that eats producers and consumers
- 28. The different regions on the Earth’s surface
- 29. Two species that need one another to survive
Down
- 1. Non- living factors in an ecosystem
- 2. The place where an organism makes its home
- 3. Different species inside an ecosystem
- 5. A factor in an environment that limits a population
- 6. The process in which plants use the sun to make food
- 9. An organism that eats dead organisms
- 10. The creation of other organisms
- 11. When one environment goes through a change, creating a new one
- 13. An organism that makes its own food
- 14. Substances that takes part in or causes a change and reaction
- 15. A large natural community of plants, animals, and abiotic factors
- 17. An excessive level of algae in a pond
- 21. An animal that eats other organisms to get energy
- 24. Organisms that live on other organisms that harm or benefit the other