Across
- 3. What was the 1st supercontinent on Earth?
- 4. What type of species flourished in forests 50 million years ago when our planet began to have a 24 hour day?
- 6. What was the last supercontinent?
- 10. What extinction occurred 252 million years ago that destroyed 96% of marine life and 73% of terrestrial vertebrates?
Down
- 1. What planet collided with Earth?
- 2. What was the 2nd supercontinent on Earth?
- 5. What carried a tiny amount of moisture that ended up filling our oceans?
- 7. What type of landscape/biome emerged from dense forests about 4 million years ago?
- 8. What type of rock covered Earth at its beginning as a sea of fire?
- 9. Early humans that populated Eurasia about 1 million years ago.