Across
- 5. A rock dating method which states that the sedimentary layers indicate the age of a rock
- 6. A physical record used for scientists to understand about the past climates
- 9. A type of greenhouse gas inhaled by trees
- 10. A large landmass where all present continents are combined
Down
- 1. When minerals replace the structure of an organism
- 2. An unsustainable practice where too many trees are cut down
- 3. This is produced when fossil fuels are burned
- 4. The movement of Earth’s plates
- 7. The largest division of time mainly seen in the geologic time scale
- 8. The Era which is characterized by the decline of dinosaurs