Chapters 21, 11, 12, 13, and 14 Terms

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Across
  1. 3. Vertical elevation differences across surface.
  2. 6. Exposure and reaction to oxygen.
  3. 8. A process that breaks down rock at Earth's surface.
  4. 9. Height above sea level.
  5. 10. The measure of underwater elevations.
  6. 11. Curved inclined surfaces.
  7. 12. Plastic Layer; hottest region of mantle.
  8. 14. Extracts calcium carbonate from sea water.
  9. 16. The study of minerals.
  10. 18. Sink An area in all of Earth's spheres where carbon is stored.
  11. 19. A weak point in the tectonic plate.
  12. 20. An assemblage of minerals.
Down
  1. 1. Built up, orogenesis
  2. 2. Divided by distribution of species.
  3. 4. Boundary zones between different but adjoining ecosystems.
  4. 5. Relating to Earth.
  5. 7. Woody vine
  6. 13. Hot lava
  7. 15. Marine invertebrates.
  8. 17. Ice Also known as Arctic sea ice