Across
- 1. the process by which certain gases in Earth’s atmosphere trap heat from the sun
- 3. what the atmosphere is like at a particular place and time
- 6. energy sources like coal, oil, and natural gas
- 7. a method of relative dating where scientists study strata
- 10. a common method of absolute dating based on the decay of radioactive isotopes
Down
- 2. this states that in a series of sedimentary layers, the oldest is at the bottom, the youngest is at the top
- 4. significant changes in the average weather patterns
- 5. the remains or traces of ancient living things
- 8. average weather conditions in a place over a long period of time
- 9. formations found in caves deposited by dripping water