Across
- 5. existing in the time before people could write
- 6. the study of changes that occur over a period of time in human populations
- 9. the sensitive inner layer of skin
- 11. an electronic device used to talk to people
- 14. the ability to share someone else's feelings
- 17. causing feelings of sadness and sympathy
- 18. of or relating to the heart
- 19. a school that provides training in special subjects or skills
Down
- 1. the study of the heart and of diseases that affect the heart
- 2. a person who studies or writes about history
- 3. the scientific study of the skin and its diseases
- 4. a device into which people speak or sing
- 7. a word that is pronounced like another word
- 8. the study of past events
- 10. a form of government in which people choose leaders by voting
- 12. happening or existing in the past
- 13. the outer layer of skin
- 15. a quality that causes people to feel sympathy and sadness
- 16. of or relating to the sounds of speech
- 17. an occurrence in which a disease spreads very quickly and affects a large number of people over a wide area or throughout the world