Test Review

4. Living
7. organism that obtains energy by eating only plants
10. process in which bacteria convert nitrogen gas into nitrogen compounds plants can use to make proteins
13. organism that obtains energy by eating both plants and animals
15. a diagram that shows the feeding relationships between organisms in an ecosystem, the interaction of many food chains
17. symbiotic relationship in which both species benefit from the relationship
19. plants and animals recolonize a habitat after a major disturbance—such as a devastating flood, wildfire, landslide, lava flow, or human activity
20. interaction in which one organism captures and feeds on another organism
22. loss of water from a plant through its leaves
23. each level receives 1/10th of the energy from level below

1. the process by which water changes from liquid form to an atmospheric gas
2. a diagram that shows the amount of energy that moves from one feeding level to another in a food web
3. a series of steps in which organisms transfer energy by eating and being eaten
5. relationship in which one organism lives in or on another organism (the host) and consequently harms it
6. the study of organisms and their interactions with each other and their environment
8. Precipitation
9. feeding level in an ecosystem
11. plants and animals first colonize a barren, lifeless habitat.
12. conversion of nitrates in the soil by bacteria into nitrogen gas
14. organisms that break down wastes and dead organisms and return raw materials to the environment
16. relationship in which one member of the association benefits and the other is neither helped nor harmed
18. groups of individuals that belong to the same species and live in the same area
21. Non Living