Across
- 3. system of knowledge about patterns in the development of nat
- 4. device for flying in the atmosphere of the Earth
- 8. universe
- 9. the person who invented the phone
- 10. wildlife science
- 12. science of celestial bodies
- 15. procedure performed by refuting a hypothesis or theory
- 19. animal science
- 20. jet engine
Down
- 1. science of the properties and structure of matter
- 2. the way
- 5. invented subject
- 6. combustible substance
- 7. science of the structure and composition of the Earth bark
- 11. apparatus used to perform special tasks in outer space
- 13. set of processes for processing materials
- 14. substance science
- 16. mechanism doing any work
- 17. meteorological instrument
- 18. plant science