The Earth

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Across
  1. 2. The study of the movement, distribution, and quality of fresh water on Earth
  2. 4. It's about the movement of plates
  3. 5. The rocky, external layer of the Earth
  4. 8. The study of the movement, distribution, and quality of salt water on Earth
  5. 10. When geology... goes back through history
  6. 12. That's what you study if you want to know more about eruptions
  7. 14. That's what you study if you're very interested in the Earth
  8. 15. The singer of Queen
  9. 17. That's what you are passionate about if you want to study earthquakes
  10. 18. They can be open or closed or isolated
  11. 19. Includes metamorphism, erosion and melting
  12. 20. Includes the hydrosphere, the atmosphere and the lithosphere
Down
  1. 1. It's formed by all living organisms
  2. 3. The 44th President of the USA
  3. 6. It's made up of never ending exchanges of water
  4. 7. The scientific study of the weather
  5. 9. The study of climate
  6. 11. A system of food chains
  7. 13. All the water on Earth, in all physical states, is called like that
  8. 16. A blend of gases that envelops and protects the Earth