Proxy Records Crossword Puzzle

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Across
  1. 2. The location where the deepest ice core was extracted.
  2. 4. Number of rings produced by a tree each year.
  3. 6. The growth of rocks can help determine the amount of what in the past?
  4. 8. A type of proxy record found in the water.
  5. 11. The study of past climates.
  6. 13. An example would be a traveler's diary.
  7. 14. In good growing conditions, the width of the tree rings are what?
Down
  1. 1. This type of grain fossil found in sediment layers can be used to identify the types of plants that existed thousands of years ago.
  2. 2. This type of gas is increasing at an alarming rate.
  3. 3. The way coral looks when temperature of the past was dry and sunny.
  4. 5. The theory which states that the Earth's orbit can cause climate to change through time?
  5. 6. People who study Earth's past climates.
  6. 7. The type of material that proxy records are found in.
  7. 9. The shape that ice cores and coral are extraced in.
  8. 10. The amount of years that trees can live for.
  9. 12. Scientists test for these in the air bubbles that are found within ice cores.