Biology Vocabulary

8. a graph that represents a situation where the population density of an organism increases slowly at first and accelerating to increasing rapidly
9. an organism that creates its own food(an autotroph)
12. a representation of the flow of energy using arrows to show how nutrients and energy is transferred
13. the position of an organism in a food chain(producer, primary consumer, etc.)
15. a relationship between two organisms in which one organism is benefited while the other is neither harmed nor benefited
16. an organism that consumes other organisms for nutrients and energy
17. an organism that consumes other organisms for nutrients and energy
20. the study of the relationships between living organisms and their environments
22. the maximum amount of organisms of a species that can exist in an ecosystem without threatening other species in the ecosystem
23. a relationship between two organisms in which both benefit
24. any type of close and long term relationship or interaction between two organisms of different species
25. the process by which an ecosystem undergoes a disturbance and restarts the cycle starting with soil until reaching a climax community
26. the unrestricted growth of a population of organisms that occurs when resources are unlimited

1. an ecosystems ability to maintain its usual cycles after damage was caused by a disturbance
2. an organism that creates its own food
3. a pattern where organisms are spread out in a fairly regular pattern
4. represents all the food chains in an ecosystem and usually has multiple organisms of each trophic level
5. a graph that represents a situation where the population density of an organism exponentially increases in a new environment
6. an organism that consumes only plants for nutrients and energy
7. a relationship between two organisms is which one benefits while harming the other
10. anything that affects the size of a population regardless of the density of the population
11. a relationship between two organisms where one organism(predator) preys on another(prey)
14. an interaction between organisms in which both require a certain resource that is in limited supply
18. the process by which an ecosystem begins without soil and with pioneer species and starts the cycle until reaching a climax community
19. a group of organisms of the same species in an area
21. an organism that decomposes or breaks down organic material for nutrients and energy