UNIT 7 VOCAB

6. The specific environment in which an organism lives, including the physical and biological conditions.
9. A resource that can be replenished naturally or through human intervention.
13. The role and position of an organism within an ecosystem, including its habitat, behavior, and interactions with other organisms.
14. The position an organism occupies in a food chain or food web, determined by its feeding relationships.
16. Organisms, such as bacteria and fungi, that break down dead organic matter into simpler substances, returning nutrients to the ecosystem.
17. A resource that cannot be replenished in a short period of time.
20. A type of symbiotic relationship in which one species benefits while the other is neither helped nor harmed.
23. The impact of human activities on the environment, expressed as the amount of biologically productive land and water required to sustain those activities.
24. The introduction of harmful substances or contaminants into the environment.
25. The process by which the concentration of a substance increases in organisms at higher trophic levels in a food chain or food web.

1. The number of individuals of a species per unit area or volume.
2. A close and long-term biological interaction between two different species.
3. A species that has a disproportionately large effect on its environment relative to its abundance.
4. The process of ecological succession starting in a virtually lifeless area with no soil.
5. A graph showing the number or proportion of individuals surviving to each age for a given species or group.
7. The process of ecological succession that occurs in an area where an ecosystem has been disturbed or destroyed, but the soil remains.
8. A type of symbiotic relationship in which both species benefit from the interaction.
10. The maximum number of individuals of a species that an environment can support sustainably.
11. A type of symbiotic relationship in which one organism benefits at the expense of another organism.
12. The movement of individuals out of a population or area.
15. The first species to colonize a newly exposed or disturbed area.
18. The long-term pattern of temperature, humidity, wind, and precipitation in an area.
19. The movement of individuals into a population or area.
21. A complex network of interconnected food chains showing the flow of energy and nutrients through an ecosystem.
22. A factor that restricts the growth or distribution of a population within an ecosystem.