Chapter 5 crossword Mady Stief and Remy Boston

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Across
  1. 2. when members of a species are held by people in zoos or other conservation facilities.
  2. 3. nonnative species in an area.
  3. 6. different environmental conditions that occur along the boundaries of an ecosystem.
  4. 8. separation of wilderness areas areas from each other.
  5. 10. species that have rapidly decreasing numbers of individuals.
  6. 11. field of biology that studies method and implements plans to protect biodiversity.
  7. 12. when the last members of a species die.
  8. 13. natural strips of land that allow the migration of organisms from one wilderness area to another.
  9. 14. philosophy that promotes letting people use resources in wilderness areas in ways that will not damage the ecosystem.
Down
  1. 1. rain,snow,sleet or fog with a pH below 7
  2. 4. layer of the atmosphere that helps to protect living organisms on earth's surface from damaging does of ultraviolet radiation from the sun.
  3. 5. variety of life in an area.
  4. 7. programs that release organisms into an area where their species once lived in hope of reestablishing naturally reproducing populations.
  5. 8. damage to a habitat by air, water, and land pollution.
  6. 9. a species in which the number of individuals falls so low that extinction is possible.