Ecology Review Crossword

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Across
  1. 5. When organisms work together
  2. 8. The study of interactions that take place between organisms and their environment.
  3. 9. Occurs in a place where an ecosystem has already existed.
  4. 11. An organism's role and position it has in its environment
  5. 15. The first organisms to live in an ecosystem
  6. 17. When one species benefits and the other species is neither benefited nor harmed
  7. 19. The place where a plant or animal lives.
  8. 20. Two or more organisms seek the same limited resource
  9. 22. All the populations of different species that live in the same place at the same time.
  10. 23. Nonliving parts of an organism’s environment.
  11. 24. Close and permanent association among organisms of different species
  12. 25. Organism that is fed upon by predators
Down
  1. 1. The portion of Earth that supports life
  2. 2. A group of similar organisms that can interbreed and produce fertile offspring.
  3. 3. An individual living thing that has all the characteristics of life.
  4. 4. All the living organisms that inhabit (to live/occupy) an environment
  5. 6. An animal that eats both plants and animals.
  6. 7. When one organisms benefits while the other organism is harmed
  7. 10. Helps maintain ecological balance
  8. 12. All the living (biotic) and nonliving (abiotic) things that interact with each other
  9. 13. Feeds on other living things
  10. 14. Occurs in an area where NO community has ever been.
  11. 16. The variety of living organisms in an area
  12. 17. An animal that eats only other animals
  13. 18. When both species benefit from one another
  14. 19. An animal that eats plants
  15. 21. A group of organisms, all of the same species, which interbreed and live in the same place at the same time.