Ice Cores, Tree Rings, and Greenhouse Gasses

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Across
  1. 5. How many years does it take for a new tree ring to grow?
  2. 6. When there is less of this, a tree ring will be thinner.
  3. 8. The amount of time a gas stays in the atmosphere.
  4. 9. The only greenhouse gas with no persistence rating.
  5. 10. What are ice cores commonly referred to as?
Down
  1. 1. When do new tree rings form?
  2. 2. Where do natural greenhouse gasses reside?
  3. 3. Where are ice cores usually taken from?
  4. 4. The first person to record greenhouse gas research.
  5. 7. The revolution that caused greenhouse gasses to skyrocket.