Unit 7 Vocabulary

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Across
  1. 3. a process started by an event that reduces an ecosystem to a smaller population
  2. 8. , all living things within all of their environments, from the deepest ocean to the atmosphere
  3. 10. a condition or resource that keeps a population at a certain size
  4. 13. ability of an ecosystem to maintain its structure and function over time
  5. 15. communities of living and nonliving things working together
  6. 17. a small or specialized habitat within a larger habitat
  7. 19. when organisms rely on each other for survival
  8. 21. the changing sequence of communities that live in an ecosystem during a given time
Down
  1. 1. a stable ecosystem where the plants and animals are in balance
  2. 2. all the nonliving things in an environment, such as water and soil
  3. 4. a group of populations of several species
  4. 5. a process that develops a biotic community in a previously barren habitat
  5. 6. a group of organisms that can reproduce with one another
  6. 7. all the living things in an environment, such as plants, animals, and bacteria
  7. 9. home environment for plants and animals
  8. 11. the unique role or job of an organism in an ecosystem
  9. 12. variety of organisms in an ecosystem or biome
  10. 14. first organisms to live in an area
  11. 16. a group of organisms that can reproduce with one another
  12. 18. direct or indirect involvement with something
  13. 20. regions of the world with similar climate (weather, temperature) animals and plants.