Science

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Across
  1. 3. The movement of rock particles and soil
  2. 5. Natural disasters and impact events
  3. 6. Natural indicators that tell the story of past climates
  4. 7. Places rocks in a sequence of formation
  5. 9. Methane, carbon dioxide, and nitrous oxide
Down
  1. 1. A method in which scientists can date layers by relation them to other rocks
  2. 2. The breakdown of rocks into smaller pieces
  3. 4. Giant calendar that scientists use
  4. 8. The largest divisions of all time