Ecosystems Crossword

2. A relationship in which both species benefit.
4. An interaction where one organism kills (predator) and eats another (prey).
8. A close relationship between two species that benefits at least one of the species. (mutualism, commensalism, parasitism)
9. Organisms that cannot make their own food. They get their energy from eating other organisms.
11. The nonliving parts of an ecosystem. Examples: water, sunlight, oxygen, temperature, soil.
14. Consumers that eat plants and animals.
15. The largest population that an environment can support.
16. Consumers that eat only plants.
17. The study of how living things interact with each other and their environment.
18. Organisms that break down dead organisms and return the raw materials to the environment.
20. Consumers that eat only animals.
21. Involves one organism living on or inside the other. In this relationship the parasite benefits while the host (what it is living in or on) is harmed, but not killed.
22. An organism's particular role or how it makes its living.

1. a species that no longer has any known living individuals.
3. The behaviors and physical characteristics of species that allow them to live successfully in their environment.
5. An environmental factor that prevents the population from increasing.
6. The struggle between organisms to survive in a habitat with limited resources.
7. Population Density = Number of Individuals/Unit Area
10. A relationship where one species benefits and the other is neither helped or harmed.
12. The living parts of an ecosystem. Examples: grass, trees, prairie dogs, hawks, bees, flowers.
13. An organism that can make its own food. They are the first source of food in an ecosystem.
16. The place where an organism lives and that provides the things the organism needs.
19. Is a organism that gets eaten by another organism