Across
- 7. Organisms that returns nutrients to the soil and breaks down dead organisms.
- 9. The series of changes that occur in an area where the ecosystem has been disturbed, but where soil and organisms still exist. (Ex: Wild Fire)
- 10. A relationship in which both organisms benefit.
- 11. A symbiotic relationship where two species are competing for the same resources.
- 13. A series of events in which one organism eats another. (A representation of feeding relationships.)
- 15. The series of changes that occur in an area where NO SOIL or organisms exist.
- 19. A consumer that eats both plants and animals.
- 20. Organisms that eats only other animals.
- 21. A close relationship between two species in which at least one of the organisms benefits.
- 22. An organism that cannot make its own food. (Organisms that consume other organisms)
- 23. The relationship in which one organism benefits and the other is unaffected.
- 24. A diagram that shows the amount of energy that moves from one feeding level to another in a food web. (Shows 10% Rule)
Down
- 1. An organism that can make its own food.
- 2. An organism that eats only plants.
- 3. On an energy pyramid, which organisms consumes secondary consumers? (3rd level of consumers)
- 4. A species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.
- 5. An animal that the predator feeds upon. (Animals that are hunted and killed.)
- 6. The pattern of overlapping food chains in an ecosystem. (A network of connected food chains that shows all the energy relationships in a ecosystem.)
- 8. An organism that does the hunting. (Animals that feed on other animals.)
- 12. On an energy pyramid, which organism consumers autotrophs? (1st level of consumers)
- 14. Any class of organisms that occupy the same position in a food chain, as primary consumers, secondary consumers, and tertiary consumers.
- 16. On an energy pyramid, which organisms consumes primary consumers? (2nd level of consumers)
- 17. A relationship in which one organism benefits and the other is harmed.
- 18. An organism that eats dead or decaying plant or animal matter.
