Across
- 3. liquid form of a gas that is released when a volcano erupts
- 6. long cores taken from ice shelfs
- 11. long cores of Earth taken from the sea floor
- 12. continent at the bottom of Earth
Down
- 1. two or more atoms that have been combined
- 2. a period of long-term cooling of Earth's temperatures
- 4. any substances made up of matter
- 5. NZ's research station in Antarctica
- 7. very common greenhouse gas
- 8. the average weather experienced in an area over a long period of time
- 9. the average height of the sea
- 10. the way something is put together