ECOLOGY

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Across
  1. 3. a series of predictable and orderly changes within an ecosystem over time
  2. 4. when individuals or groups of organisms compete for similar resources such as territory, mates, water and food in the same environment
  3. 7. a group of individuals of the same species living in a specific geographical area and reproducing
  4. 9. an organism that uses a primary energy source to conduct photosynthesis or chemosynthesis
  5. 16. 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)
  6. 17. an organism that obtains energy by feeding on other organisms or their remains
  7. 18. a large area or geographical region with distinct plant and animal groups adapted to that environment
  8. 19. chemical or physical factor that limits the existence, growth, abundance, or distribution of an individual organism or a population
  9. 20. a species that is found in its originating location and is generally restricted to that geographic area
  10. 24. a term that describes an organism associated with a water environment
  11. 26. 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
  12. 27. a term that describes a living or once-living organism in an ecosystem
  13. 28. the study of energy flow (energy transformations) into and within living systems
Down
  1. 1. a simplified path illustrating the passing of potential chemical energy (food) from one organism to another organism
  2. 2. 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. 5. the position of an organism in relation to the flow of energy and inorganic nutrients through an ecosystem (producer, consumer, decomposer)
  4. 6. a complex arrangement of interrelated food chains illustrating the flow of energy between interdependent organisms
  5. 8. 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.
  6. 10. a model that illustrates the biomass productivity at multiple trophic levels in a given ecosystem
  7. 11. 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
  8. 12. a term that describes an organism associated with a land environment
  9. 13. an organism that obtains nutrients by consuming dead and decaying organic matter which allows nutrients to be accessible to other organisms
  10. 14. the study of the relationships between organism and their interactions with the environment
  11. 15. different populations of organisms interacting in a shared environment
  12. 21. a system composed of organisms and nonliving components of an environment
  13. 22. the lowest taxonomic level of biological classification consisting of organisms capable of reproduction that results in fertile offspring
  14. 23. a term that describe a nonliving factor in an ecosystem
  15. 25. an area that provides an organism with its basic needs for survival
  16. 28. the zone of life on Earth; sum total of all ecosystems on Earth
  17. 29. the total surrounding of an organism or a group of organisms