7th populations

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Across
  1. 4. these services help keep recreation places nice- exploring places, learning about the history of the area
  2. 9. The study of how organisms interacts with each other and with their environment is called
  3. 10. the symbiont in a parasitic relationship is a ____
  4. 12. in a ____ symbiosis, the host is not affected
  5. 16. the number and variety of different species in an area
  6. 18. those individuals with characteristics that help them survive, will survive and reproduce and pass those traits to offspring
  7. 20. an organism’s particular role in an ecosystem
  8. 22. a trait/behavior an organism has inhertited that enables it to prosper in its environment
  9. 25. using less resources so they last longer
  10. 26. helping a degraded or destroyed ecosystem recover
  11. 27. Populations can increase when ___ rate is higher than ___ rate (2 words)
  12. 29. the study of how living things interact with their environment
  13. 30. something that prevents an organism from living or growing in an environment
  14. 31. protection from the loss of resources so they last indefinitely – often includes making regulations/rules
  15. 32. the disappearance of all members of a species
  16. 34. a species that influences the survival of many others in an ecosystem
  17. 36. in a ___ symbiosis, the host is harmed by the symbiont
  18. 37. Something devastates a community like a fire and succession starts after that
  19. 38. a series of changes that occur when an area starts from no soil or organisms present
  20. 39. these services help fix problems- regulates use of things- keeping pollution down, regulations to keep down pests and diseases regulations on fishing, hunting
Down
  1. 1. the living and once living factors in an ecosystem
  2. 2. struggle for resources that may be limited
  3. 3. behaviors and characteristics that allow organisms to live successfully in their environment
  4. 5. the struggle between organism to survive in a habitat with limited resources
  5. 6. all the different populations living together make this
  6. 7. the number of organisms per unit area (2 words)
  7. 8. a relationship in which 2 species (a host and a symbiont) live closely together, the symbiont always benefits
  8. 11. all the members of one species living in a particular area
  9. 13. the largest population an environment can support is called this
  10. 14. the factors that are nonliving in an environment
  11. 15. the smallest unit of ecological organization is a single ___
  12. 17. in a ___ symbiosis, both individuals benefit
  13. 19. The 2 individuals in a symbiotic relationship are the host and the ___
  14. 21. organisms that leave an area in search of better resources is this
  15. 23. interaction where one organism kills another
  16. 24. plants that are the first to start populating an area
  17. 28. the part of an ecosystem where an organism lives and feeds is called the organism’s ___
  18. 33. organisms that enter a new area and increase the population size
  19. 35. these services help in using natural resources to help us filtering water, farming, hunting and fishing