Across
- 2. an organism that obtains nutrients by consuming dead and decaying organic matter which allows nutrients to be accessible to other organisms
- 4. when individuals or groups of organisms compete for similar resources such as territory, mates, water and food in the same environment
- 5. a series of predictable and orderly changes within an ecosystem over time
- 7. the movement of abiotic factors between the living and nonliving components within ecosystems; also known as nutrient cycles (water cycle, carbon cycle, oxygen cycle and nitrogen cycle)
- 11. a large area or geographical region with distinct plant and animal groups adapted to that environment
- 14. the position of an organism in relation to the flow of energy and inorganic nutrients through an ecosystem (producer, consumer, decomposer)
- 15. a complex arrangement of interrelated food chains illustrating the flow of energy between interdependent organisms
- 16. the lowest taxonomic level of biological classification consisting of organisms capable of reproduction that results in fertile offspring
- 17. an area that provides an organism with its basic needs for survival
- 18. an organism that uses a primary energy source to conduct photosynthesis or chemosynthesis
- 21. the study of the relationships between organism and their interactions with the environment
- 22. the study of short- and long-term changes in the number of individuals for a given population, as affected by birth, death, immigration and emigration
- 24. a term that describes a living or once-living organism in an ecosystem
- 25. a term that describes an organism associated with a land environment
Down
- 1. a group of individuals of the same species living in a specific geographical area and reproducing
- 3. a species that is found in its originating location and is generally restricted to that geographic area
- 5. a relationship between two organisms (mutualism, in which both species benefit; parasitism , in which one organism benefits and the other organism is harmed; and commensalism, in which one organism benefits and the other organism does not benefit or is not harmed.
- 6. a species normally living outside a distribution range that has been introduced through either deliberate of accidental human activity; also can be know as introduced, invasive, alien, nonindigenous, or exotic
- 8. an organism that obtains energy by feeding on other organisms or their remains
- 9. the total surrounding of an organism or a group of organisms
- 10. a system composed of organisms and nonliving components of an environment
- 12. a model that illustrates the biomass productivity at multiple trophic levels in a given ecosystem
- 13. the zone of life on Earth; sum total of all ecosystems on Earth
- 19. chemical or physical factor that limits the existence, growth, abundance, or distribution of an individual organism or a population
- 20. a simplified path illustrating the passing of potential chemical energy (food) from one organism to another organism
- 23. a term that describe a nonliving factor in an ecosystem