Carbon and that

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Across
  1. 2. PLANTS
  2. 6. OXYGEN
  3. 8. DECEASED
  4. 10. AGRI-
  5. 11. ROCK BREAKDOWN
  6. 13. LAVA
Down
  1. 1. GASES
  2. 3. PLATES
  3. 4. EXTRACTION
  4. 5. CEMENT
  5. 7. INTERCEPTION
  6. 9. LATITUDES
  7. 12. PLANTS