ECOLOGY

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Across
  1. 1. the study of the relationships between organism and their interactions with the environment
  2. 4. a model that illustrates the biomass productivity at multiple trophic levels in a given ecosystem
  3. 5. the position of an organism in relation to the flow of energy and inorganic nutrients through an ecosystem (producer, consumer, decomposer)
  4. 7. the total surrounding of an organism or a group of organisms
  5. 11. a term that describes a living or once-living organism in an ecosystem
  6. 12. chemical or physical factor that limits the existence, growth, abundance, or distribution of an individual organism or a population
  7. 15. a series of predictable and orderly changes within an ecosystem over time
  8. 17. an organism that obtains nutrients by consuming dead and decaying organic matter which allows nutrients to be accessible to other organisms
  9. 19. a term that describes an organism associated with a water environment
  10. 20. a large area or geographical region with distinct plant and animal groups adapted to that environment
  11. 21. a species that is found in its originating location and is generally restricted to that geographic area
  12. 23. different populations of organisms interacting in a shared environment
  13. 25. the lowest taxonomic level of biological classification consisting of organisms capable of reproduction that results in fertile offspring
Down
  1. 2. an organism that obtains energy by feeding on other organisms or their remains
  2. 3. 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
  3. 6. when individuals or groups of organisms compete for similar resources such as territory, mates, water and food in the same environment
  4. 8. an organism that uses a primary energy source to conduct photosynthesis or chemosynthesis
  5. 9. a term that describes an organism associated with a land environment
  6. 10. a term that describe a nonliving factor in an ecosystem
  7. 11. the zone of life on Earth; sum total of all ecosystems on Earth
  8. 13. a simplified path illustrating the passing of potential chemical energy (food) from one organism to another organism
  9. 14. an area that provides an organism with its basic needs for survival
  10. 15. 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
  11. 16. a system composed of organisms and nonliving components of an environment
  12. 18. a group of individuals of the same species living in a specific geographical area and reproducing
  13. 22. a complex arrangement of interrelated food chains illustrating the flow of energy between interdependent organisms
  14. 24. a set of interacting or interdependent components, real or abstract, that form an integrated whole. An open system is able to interact with its environment. A closed system is isolated from its environment.