Ecology Vocabulary Work

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Across
  1. 3. a natural resource that can be replenished.
  2. 6. species that are the first to colonize newly created environments.
  3. 8. the living together of two different organisms of different species in a close and long-term association.
  4. 10. estimates the biologically productive land and sea area.
  5. 13. factors resulting from activities of a living thing.
  6. 15. variety of life on Earth.
  7. 18. an organism that cannot make its own food by carbon fixation.
  8. 20. the movement of animals away from a specific area.
  9. 22. the impact of humanity's actions on the quality of aquatic and terrestrial environment.
  10. 23. the process by which the concentration of a substance, such as pesticide, increases in the tissues of organisms at successively higher levels in a food chain.
  11. 25. place where an organism makes its home.
  12. 26. conserved matter moves through the biotic and abiotic parts of an ecosystem.
  13. 30. describes a single environment and every living organism and non-living factor that is contained within it or characterizes it.
  14. 32. branch of biology that studies how organisms interact with the environment and other organisms.
  15. 34. an autotrophic organism that can produce complex organic compounds from simple inorganic molecules.
  16. 36. a natural resource that cannot be easily replaced by natural means at a pace quick enough to keep up with consumption.
  17. 37. species that have an extremely high impact on a particular ecosystem relative to its population.
  18. 38. an environmental factor that restricts growth, abundance, or distribution of a population in an ecosystem.
  19. 39. interactions between organisms of two different species.
Down
  1. 1. plants and animals first colonize a barren, lifeless habitat.
  2. 2. a graphical representation, showing the flow of energy at each trophic level in an ecosystem.
  3. 4. food chains in a single ecosystem.
  4. 5. prevailing weather conditions.
  5. 7. graphic representation of the number of individuals in a population that can be expected to survive to any specific age.
  6. 9. an animal establishing a home in a habitat because it has resources it can utilize or because the habitat is ideal for them.
  7. 11. a community of organisms adapted to a particular climatic or environmental condition on a large geographic area in which they occur.
  8. 12. an interacting group of various species in a common location.
  9. 14. a number of organisms that an ecosystem can sustainably support.
  10. 16. a level or a position in a food chain, food web, or an ecological pyramid.
  11. 17. the weight of living organisms of a species.
  12. 19. interrelationship of a species with all the biotic and abiotic factors affecting it.
  13. 21. non-living thing or condition that influences or affects an ecosystem and the organisms in it.
  14. 24. an organism that breaks down organic material such as the remains of dead organisms.
  15. 27. number of individuals per unit area.
  16. 28. a relationship between two species of organisms in which one species benefits while the other is unaffected.
  17. 29. a category that belongs within the food chain of an ecosystem.
  18. 31. in which plants and animals recolonize a habitat after a major ecological disturbance significantly alters an area but has not rendered it completely lifeless.
  19. 33. an organism that makes its own food from inorganic materials without needing other organisms.
  20. 35. a type of symbiotic relationship in which one organism benefits at the expense of another organism usually of different species.