Unit 3: Population

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Across
  1. 2. the number of deaths between the ages of 1 and 5 per 1,000 people
  2. 8. when a population outgrows its carrying capacity and resources
  3. 9. a disease which sets in fast
  4. 12. splitting of ecosystems into smaller fragments
  5. 13. any substance which causes an allergic reaction
  6. 15. any substance which causes cancer
  7. 16. the number of males in relation to females (vice versa)
  8. 18. an organism that provides several different services for their given ecosystem
  9. 19. ability to maintain or support a process continuously over time
  10. 24. an area of the ocean needed to sustain a person's fish consumption
  11. 25. the two organisms benefit off of each other
  12. 28. abbreviation for habitat destruction,invasive species, population growth,pollution, climate change, overexertion
  13. 31. adjective for a country with relatively high industrialization and income
  14. 32. the study of the interactions between organisms within an ecosystem
  15. 36. leaving a population
  16. 37. how quickly a species dies off
  17. 39. number of births per 1,000 people
  18. 40. toxic substance that affects the nervous system
  19. 41. strips of a natural habitat that connect populations
  20. 44. ability to resist something
  21. 45. the study of human population trends
  22. 46. number of children a woman will have over her lifetime
  23. 48. species with a low growth rate
  24. 49. a time post-WW2 when the birth rate of the united states increased dramatically; population almost doubled in the U.S.
  25. 50. an environmental factor which prevents a population from growing
Down
  1. 1. represented by the formula births-deaths
  2. 3. the first organisms to colonize an area after an ecological disaster
  3. 4. the concentration of a chemical increases as it goes up a food chain
  4. 5. species with a high growth rate
  5. 6. the number of individuals per unit of area
  6. 7. amount of time it takes a population to double
  7. 10. one organism benefits off the host; usually kills or harms host
  8. 11. affects a large number of people over a broader area
  9. 14. an area with a large amount of valuable ocean organisms
  10. 17. a group of the same species living in the same area
  11. 20. dramatic decline in population size over a short period of time
  12. 21. the average number of years a person in a society is expected to live
  13. 22. number of death per 1,000 people
  14. 23. affects small number of people in a small area
  15. 26. the number of individuals within a population
  16. 27. waters dissolving CO2 which lowers pH
  17. 29. movement from one place to another
  18. 30. one who studies demography
  19. 33. continued population growth after reduction measures have already been implemented
  20. 34. an adjective used to describe a disease that can spread easily between individuals
  21. 35. an adjective used to describe a disease that is slow and steady
  22. 38. the number of deaths under 1 year of age per 1,000 people
  23. 42. the degree of dependence on the younger generation from the older generation
  24. 43. a group of populations that are connected by occasional intermixing between them
  25. 47. the study of poisonous substances