Populations, Communities, Ecosystems Unit

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Across
  1. 2. a mature, stable community at the end of succession
  2. 6. restoring damaged ecosystems
  3. 8. when one organism kills another for food
  4. 11. symbiosis where both species benefit
  5. 12. recreational or spiritual benefits from ecosystems
  6. 13. a non native species that harms an ecosystem
  7. 16. a close relationship between species that benefits at least one
  8. 18. succession after a disturbance where soil remains
  9. 21. symbiosis where one benefits and harms the host
  10. 22. when a species no longer exists
  11. 25. the struggle between organisms for the same limited resources
  12. 27. protecting and managing natural resources
  13. 28. first organisms to grow in an area
Down
  1. 1. materials from nature used by humans
  2. 3. study of interactions between organisms and environment
  3. 4. succession in an area with no soil
  4. 5. variety of life in an ecosystem
  5. 7. benefits humans receive from ecosystems
  6. 9. behaviors or traits that help organisms survive
  7. 10. how an organism makes its living and interacts with its environment
  8. 14. symbiosis where one benefits and the other is unaffected
  9. 15. services like climate or flood control
  10. 17. services like nutrient cycling and soil formation
  11. 19. predictable changes in a community over time
  12. 20. actions or influences between organisms
  13. 23. services that provide food and materials
  14. 24. a species with a large impact on its ecosystem
  15. 26. using resources without harming future generations