Across
- 7. a non-native animal that thrives and becomes a predator in its new location
- 8. slight movement over a period of 26,000year where earths axis moves
- 9. water below the Earth's surface
- 11. the point between objects where they balance each other out
- 12. the process by which plates move
- 13. drift theory that the continents where once one
Down
- 1. breeding of fish in a farm-like environment
- 2. a horizontal current on the top of the ocean
- 3. the breaking down of rock
- 4. the transportation of rock from one place to another
- 5. an imaginary line around which a body rotates
- 6. when two plates move apart
- 10. the land that separates different rives and streams
- 12. rock that has changed from heat and pressure