Tricky Teaser

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Across
  1. 2. 2. The study of matter, energy, and the fundamental forces of the universe
  2. 3. 10. A small hole or tear
  3. 6. 13. A part of a whole, often expressed as a fraction
  4. 9. 11. Written works, especially those with artistic or intellectual value
  5. 12. 20. A plan or arrangement
  6. 13. 15. Understanding and grasping a concept
  7. 14. 5. Full of secrets and enigmas
  8. 16. 19. A person who designs buildings and structures
  9. 18. 1. A natural event that puzzles scientists
  10. 19. 3. A professional who dispenses medications and provides health advice
  11. 20. 8. Something unknown and perplexing
Down
  1. 1. 12. Three-dimensional art form created by shaping materials
  2. 4. 14. The process of building or creating something
  3. 5. 6. Happening before the present time
  4. 7. 4. Lavish and opulent
  5. 8. 9. Edible plant matter
  6. 10. 17. Unlikely or highly improbable
  7. 11. 18. Understood without being stated
  8. 15. 7. Measurement of heat or cold
  9. 17. 16. The release of energy or substances