Scientific Discoveries and Inventions 3

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Across
  1. 1. "A substance that can be decomposed by bacteria or other living organisms."
  2. 3. "A technique that uses sound waves to visualize internal body structures."
  3. 7. "The technique of altering the DNA of an organism."
  4. 10. "The science of combining biology with electronics and engineering."
  5. 11. "The force exerted by magnets, crucial in many technologies."
  6. 15. "A substance that prevents infection by killing bacteria on wounds."
  7. 17. "An instrument used to listen to sounds inside the body."
  8. 18. "The study of celestial objects and the universe beyond Earth."
  9. 20. "The process by which green plants convert sunlight into energy."
Down
  1. 2. "Energy emitted in the form of waves or particles."
  2. 4. "The study of materials at extremely low temperatures."
  3. 5. "A 3D image created with laser technology."
  4. 6. "A medical imaging technique that uses magnetic fields and radio waves."
  5. 8. "A subatomic particle with a negative charge."
  6. 9. "Thin glass fibers that transmit light, used in telecommunications."
  7. 12. "The manipulation of matter on an atomic and molecular scale."
  8. 13. "A substance that speeds up chemical reactions without being consumed."
  9. 14. "The study of organisms and their interactions with the environment."
  10. 16. "A step-by-step procedure for solving a problem, especially in computing."
  11. 19. "A machine capable of carrying out tasks automatically."