1. crises

2. knives

3. media

4. roofs

5. pianos

6. waves

7. wishes

8. armies

9. briefs

10. videos

11. heroes

12. data

13. bacteria

14. oxen

15. tomatoes

16. canoes

17. berries

18. loaves

19. lives

20. messages

Extra Credit Words:  a. temperature  b. thermometer