the biosphere

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Across
  1. 3. 15th on the periodic table
  2. 6. living things
  3. 7. the air
  4. 8. the soil
  5. 9. 7th on the periodic table
Down
  1. 1. Dynamic system of organisms interacting with each other and their environment
  2. 2. 6th on the periodic table
  3. 4. Earths life support system.
  4. 5. The water