Ecosystems

3. organism that breaks down dead or decaying organisms.
4. all the interacting populations in a specific area.
7. all the living organisms in an ecosystem.
9. relationships between species where one benefits and the other is neither helped nor harmed.
11. a living organism that produces its own food.
13. organisms that provide nourishment and shelter for a parasite.
14. a living organism that benefits by thriving nutrients at the expense of another species.
15. complete sequence of organisms in an ecosystem, in which each organism is eaten by the next one in the chain.
18. nonliving components of an ecosystem.

1. interaction between organisms in which one organism captures and feeds on another organism.
2. study of interactions between organisms and their environment.
3. organism that derives its energy from organic waste and dead organisms.
5. natural role of an organism within its environment.
6. collection of all the different populations that live together in an area.
8. all the individuals of a particular species that live in a specific area.
10. a group of individuals of the same species that live in the same area and interbreed.
11. organism that is eaten by a predator.
12. An organism that cannot produce its own food and must obtain it by consuming other organisms
16. Natural environment where an organism lives.
17. complex network of many interconnected food chains and pathways.