Topic 10: Hydrocarbons

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Across
  1. 2. longer
  2. 4. fuels
  3. 5. polymers
  4. 8. useful
  5. 9. hydrocarbons
  6. 11. plankton
Down
  1. 1. fractions
  2. 3. temperature
  3. 6. separated
  4. 7. alkenes
  5. 10. cracking