Chapter 5 Vocab. Crossword Puzzle- Joshua Paduano & Josh Jeter

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Across
  1. 3. Species that have rapidly decreasing numbers of individuals.
  2. 6. A species in which the number of individuals falls so low that extinction is possible.
  3. 7. Separation of wilderness areas from each other; may cause problems for organisms that need large areas for food or mating.
  4. 9. Field of biology that studies methods and implements plans to protect biodiversity.
  5. 10. The study of life that seeks to provide an understanding of the natural world.
  6. 12. Damage to a habitat by air, water, and land population.
  7. 14. Philosophy that promotes letting people use resources in wilderness areas in ways that will not damage the ecosystem.
Down
  1. 1. Layer of the atmosphere that helps to protect living organisms on Earth's surface from damaging doses of ultraviolet radiation from the sun.
  2. 2. Rain, snow, sleet, or fog with a pH below 7; causes the deterioration of forests, lakes, statues, and buildings.
  3. 4. Different environmental conditions that occur along the boundaries of an ecosystem.
  4. 5. Programs that release organisms into an area where their species once lived in hopes of reestablishing naturally reproducing populations.
  5. 7. Natural strips of land that allow the migration of organisms from one wilderness area to another.
  6. 8. When the last members of a species die.
  7. 11. When members of a species are held by people in zoos or other conservation facilities.
  8. 13. Nonnative species in an area; may take over niches of native species in an area and eventually replace them.