K-T Boundary

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