THE LAYERS OF THE EARTH

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Across
  1. 2. All the water in the planet.
  2. 5. The amount of living organisms in the planet.
  3. 6. The name of our planet.
  4. 8. The most common gas in the Atmosphere.
  5. 10. The air that surround the Earth
  6. 12. The opposite of East
  7. 13. Hydro means ________.
Down
  1. 1. The rocky part of the Earth
  2. 3. The center of the Earth.
  3. 4. We need this gas to live.
  4. 7. The hard surface of the Earth.
  5. 9. The opposite of South
  6. 11. The layer of liquid rock under the surface of the Earth.