RP3 - difficult words

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Across
  1. 3. A word describing the fear of confined spaces
  2. 5. A process of learning or acquiring knowledge
  3. 6. The largest desert in the world (outside of polar regions)
  4. 8. A mineral that is the hardest known natural substance
  5. 9. An excessive or irrational fear of something
  6. 12. The act of breaking down a compound into simpler components (
  7. 15. A Shakespearean tragedy featuring the Prince of Denmark
Down
  1. 1. A philosophical theory that emphasizes the importance of the individual
  2. 2. A device for measuring atmospheric pressure
  3. 4. An economic system where trade and industry are controlled by private owners for profit
  4. 7. The process by which plants make food using sunlight
  5. 10. A type of tree known for its needles and cones
  6. 11. An ancient region located between the Tigris and Euphrates rivers
  7. 13. The branch of mathematics dealing with shapes, angles, and dimensions
  8. 14. The longest bone in the human body