Bio Final 2

3. a group of ecosystems with the same climax communities
8. organisms that use energy from the sun or energy stored in chemical compounds to manufacture their own nutrients
11. relationship between two species of plants or animals in which one benefits at the expense of the other, sometimes without killing the host organism
13. _____ variable, condition that results from changes in the independent variable
15. _______ group, receives the treatment or change in the independent variable
18. variable that does not change
19. association between organisms of two different species in which each benefits

1. uses a variety of research to study living organisms and their interactions with the environment
2. natural environment where a particular organism lives and utilizes the resources of the place for its survival, food, shelter, protection, and mating
4. the functional role and position of a species in its environment that describes how the species responds to the distribution of resources and competitors or predators
5. _______ ecosystem, concerns the mechanisms governing interactions between various species and their overarching effects
6. organisms that can’t make their own food and must feed on other organisms for energy and nutrients
7. group of organisms of the same species which interbreed and live in the same place at the same time
9. relationship between individuals of two species in which one species obtains food or other benefits from the other without either harming or benefiting the latter
10. _____ group, does not receive treatment or change in the independent variable
12. _____ variable, or experimental variable; condition that is tested because it affects the outcome of the experiment
14. levels of _____: organisms, population, community, ecosystem
16. no living parts of an organism’s environment such as air currents, temperature, moisture, light, or soil
17. living organism that inhabits an environment