unit 8 vocab

4. organisms that obtain energy by eating only plants
8. biological influences or living factors that impact an organisms within an ecosystem
9. web collection of all food chains in the ecosystem
13. close relationship between 2 species in which 1 benefits and the other is harmed
14. the natural home or environment of an animal, plant, or other orgnaisms
15. organism that obtains energy by eating plants and animals
19. organisms that uses energy from their environment to create their own food
20. organism that relies on other organisms for its energy and food supply

1. all the organisms that live in a particular area and their nonliving environment
2. total amount of living tissue within a given trophic level
3. exclusion principle no 2 organisms can occupy the same niche in the same habitat at the same time
5. physical or nonliving factors that shape the ecosystem
6. chain series of steps that show single pathways of matter and energy from producer to top consumer
7. collection of all ecosystems and biomes on earth
10. organisms that obtain energy by only eating plant and animal remains or other dead matter
11. organism that obtain energy by eating only other animals
12. organisms that breaks down organisms matter into its chemical components to be recycled again - and used
16. group of ecosystems with the same climate and similar dominant or climax communities
17. the study of interactions among organisms and their environment
18. specific tole a species fulfills in an ecosystem that encompasses all the physical and biological conditions and interactions of a species