Science vocab

2. ecological relationship in which two or more organisms depend on the same limited resourse
4. an organism that gets energy by breaking down the remains of dead organisms
6. an organism that eats only plants
8. respiration is the process by which cells use oxygen to produce energy from food
13. An organism that eats other organisms or organic matter
14. an organism that kills and eats all or part of another organism
16. a relatonship in which two different organisms live in close assocation with each other
20. all of the populations of species that live in the same habitat and interact with each other
21. the number and variety of organisms ina given area during a specific period of time
22. a group of organisms of the same species that live in a specific geographical area

1. factor an environmental factor that is associated with or results from the activities of living organisms
3. The process by which plants, algae, and some bacteria use sunlight to make food
5. pyramid a triangular diagram that shows an ecosystem's loss of energy
7. destruction the ruin or alteration of a place inhabited by an ecological community
9. the replacement of one type of community by another at a single location over a period of time
10. an organism that is killed and eaten by another organism
11. all living organisms and their nonliving environment in a specific area
12. a group of organisms that are closely related and can mate to produce fertile offspring
15. an organism that can make its own food by using its surroundings
17. in ecology, an event that changes a community by removing ot destroying organisms or by altering resource availabillity
18. factor an environmental factor that is not associated with the activities of living organisms
19. web a diagram that shows the feeding relationships between organisms in an ecosystem