Scientific Discoveries and Inventions 6

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Across
  1. 3. "A community of organisms and their environment working together."
  2. 5. "A structure containing genetic material in the form of DNA."
  3. 6. "The time of year when day and night are of equal length."
  4. 8. "The process of strengthening rubber by adding sulfur."
  5. 10. "A substance that increases the rate of a chemical reaction."
  6. 11. "A treatment using extreme cold to manage pain or injury."
  7. 13. "The medical field focused on imaging techniques like X-rays."
  8. 16. "The branch of science dealing with motion and its causes."
  9. 17. "The study of sound and its properties."
  10. 18. "A complex geometric pattern found in nature, like snowflakes."
  11. 19. "An imaging technique that uses ultrasound for medical diagnosis."
Down
  1. 1. "A shallow dish used to culture bacteria and other microorganisms."
  2. 2. "An instrument for measuring humidity levels in the air."
  3. 4. "The study of materials at extremely low temperatures."
  4. 7. "A small gas burner used in scientific laboratories."
  5. 9. "An early communication device using coded electrical signals."
  6. 12. "The use of liquids to transmit power, often in machinery."
  7. 14. "The process by which plants produce food using sunlight."
  8. 15. "A device that visualizes electric signals as waveforms."
  9. 17. "A type of matter with particles opposite to normal matter."