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Across
  1. 2. A mountain with a large opening at the top through which gases and lava are/have been forced out into the air
  2. 4. A person who has done something wrong or against the law
  3. 7. The mixture of gases that surrounds the earth
  4. 11. Made or produced to copy something natural; not real
  5. 12. A thing you can choose to do or have out of two or more possibilities
  6. 13. Being useful to somebody
  7. 14. A type of fuel oil that is made from petroleum and that is used in the engines of planes
Down
  1. 1. Used to say that a particular situation or fact makes you sad or disappointed.
  2. 3. No longer in existence
  3. 5. Feeling or showing anxiety about something
  4. 6. Worth a lot of money
  5. 8. Small and weak
  6. 9. The natural world in which people, animals and plants live
  7. 10. Used to emphasize that something is completely true
  8. 12. To tell somebody what you think they should do in a particular situation