K-T boundary
Across
- 3. this was the period where the first dinosaurs appered.
- 6. higher levels of an element.
- 9. this was the cause of dinosaurs deaths.
- 10. this era's rocks was compared to the Mesozoic era's rocks.
Down
- 1. the first bird appered in this period.
- 2. tectonics this describes the movement of several large plates that make up the surface of Earth.
- 4. this period was where flowering plants
- 5. scientists believe that this was the cause of the mass extinction at the end of the Mesozoic era.
- 7. the era where K-T boundary begin.
- 8. creatures that were the dominant organisms during the Mesozoic era.