Earth terminologies

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Across
  1. 3. A large mass of ice that moves over the land
  2. 9. A layer that compromises the Earth's crust, it's divided into tectonic plates
  3. 10. Animal life
  4. 11. The crust of the ocean
  5. 12. the deepest core inside the Earth
  6. 14. the layer that is before the outer core
  7. 16. Plant life
  8. 18. A mantle layer that is before the outer core
  9. 19. Zero degrees latitude, divides the earth into Northern and Southern hemisphere
  10. 20. A land where little to no water is in it and filled with sand
Down
  1. 1. Half of the earth's surface, there are 4 in total
  2. 2. The plant and animal life on the Earth
  3. 4. Molten rock that lies beneath the surface of the Earth
  4. 5. A map which shows points of equal elevation as a line
  5. 6. When all the continents separated
  6. 7. The core after the inner core
  7. 8. Forces that shape the Earth's surface
  8. 13. The long term trend in weather conditions of an area
  9. 15. The study of the interrelationships between life forms and their environment
  10. 17. Magma that reaches the Earth's surface