Across
- 3. Single celled organisms have been producing this for 2 billion years in this era.
- 6. The era that covers 90% of Earth's history.
- 8. This era is characterized as the age of dinosaurs.
- 9. water vapour cooled and condensed to form this.
- 10. The mesozoic era was known as the 'Age of _____________'.
- 12. These continue to push land masses across the Earth's surface.
Down
- 1. 95% of all life on earth died.
- 2. Several of these mass _____________ happened during this era.
- 4. Swamps and forests were able to form because of this.
- 5. This super continent that is breaking up into the continents we now know.
- 7. Life only existed in or near this during the Paleozoic era.
- 11. This era lasted about 325 million years.