Across
- 6. a process of heating liquids to kill germs
- 9. the reason something happened
- 12. a list of events in chronological order
- 14. a document that gives an inventor the right to be the only one to make or sell their invention
- 15. putting event in the order they happened
- 16. a machine that automatically greases an engine
- 17. the result of something that happened
Down
- 1. a liquid injected into a person to prevent disease
- 2. an illness that makes people sick and unable to walk
- 3. _____ thinking: a clear and organized way of making connections
- 4. to identify a disease for treatment
- 5. something that shoes the days of the week and months of the year
- 7. a machine that collects crops
- 8. a program that runs a computer system
- 10. taking something from one person to give to another
- 11. a computer program designed for a specific purpose
- 13. a specific period of history that is known for a certain feature