Literacy activity

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Across
  1. 5. radiation
  2. 6. troposphere
  3. 7. photosynthesis
  4. 8. biosphere
  5. 9. atmosphere
  6. 10. mesosphere
  7. 11. hydrosphere
Down
  1. 1. thermosphere
  2. 2. greenhouse
  3. 3. stratosphere
  4. 4. lithosphere