Ethan & Evan | Period 2 | Chapter 5 Vocab

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Across
  1. 3. When the last members of a species die.
  2. 4. Layer of the atmosphere that helps to protect living organisms on Earth's surface from damaging rays of ultra-violet radiation from the sun.
  3. 7. A species in which the number of individuals falls so low that extinction is possible.
  4. 9. Separation from wilderness areas from each other.
  5. 11. Field of biology that studies methods and implements plans to protect biodiversity.
  6. 12. Variety of life in an area.
  7. 13. When members of a species are held by people in zoos or other conservation facilities.
  8. 14. Species that have rapidly decreasing numbers of individuals.
Down
  1. 1. Philosophy that promotes letting people use resources in wilderness areas in ways that will not damage the ecosystem.
  2. 2. Damage to a habitat by air, water, and land pollution.
  3. 5. Rain, snow, sleet, or fog with a low pH value.
  4. 6. Programs that release organisms into an area where species once lived in hopes of reestablishing natural reproducing population.
  5. 8. Natural strips of land that allow the migration of organisms from one wilderness area to the other.
  6. 10. Non-native species in an area.
  7. 15. Different environmental conditions that occur along the edges of an ecosystem.