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