Ecology Part I

6. the level or position an organism is in a food chain/web
9. the total weight of living tissue in an environment
12. a nonliving component of an environment
13. the variety of different organisms in an ecosystem
14. factors that limit the population of a species or slow or stop its growing; controls the carrying capacity of an ecosystem
17. energy moving between different organisms at different trophic levels
18. consists of all the organisms and the physical environment with which they interact
19. an organism being consumed by another organism
20. an inborn reaction or behavioral pattern present within an organism

1. a species that is largely important in the success of an ecosystem
2. plants that make their own food through photosynthesis
3. an organism that relies on the consumption of another organism as an energy source
4. the reduction of a behavioral response to a stimulus after repeated presentations of that stimulus
5. an organism consuming another organism
7. the amount of organisms of a species that an environment can support and sustain
8. a living component of an environment
10. a nonnative species that can cause harm and imbalance in an ecosystem
11. organisms that break down dead or decaying organisms
15. a relationship between organisms who share a need for a resource of limited supply
16. representation of the different trophic levels and the energy transfer between them