biology unit 8

2. increase in the number of people who inhabit a territory or state
5. Organisms that make their own food
7. The study of how living things interact with each other and their environment
11. Place where an organism lives
13. Ecological rule that states that no two species can occupy the same exact niche in the same habitat at the same time
15. All the living organisms that inhabit an environment
17. A biological community of interacting organisms and their physical environment.
20. the variety of life in the world or in a particular habitat or ecosystem.
21. An organism that breaks down wastes and dead organisms
22. An animal that eats both plants and animals

1. both species benefit
2. A relationship between two organisms of different species where one benefits and the other is harmed
3. Number of individuals per unit area
4. Nonliving components of environment.
6. An organism's particular role in an ecosystem, or how it makes its living.
8. A consumer that eats only animals.
9. A consumer that eats only plants.
10. A group of ecosystems that share similar climates and typical organisms
12. An organism that cannot make its own food.
14. A relationship between two organisms in which one organism benefits and the other is unaffected
16. organism that feeds on plant and animal remains and other dead matter
18. A series of steps in which organisms transfer energy by eating and being eaten
19. A close relationship between two species that benefits at least one of the species.