Across
- 3. to build or make
- 5. relating to a house
- 6. the earth
- 8. relating to blood
- 10. thread
- 12. double of something
- 13. blue as in colors
- 16. life
- 18. white in color
- 19. intestine
- 21. weird or peculiar
Down
- 1. enzyme
- 2. the color red
- 4. green in color
- 5. on
- 7. a song or tune
- 9. gland
- 11. something difficult or not
- 13. a cell
- 14. Without something or someone
- 15. away or up, indierect
- 17. good
- 18. relating to the air
- 20. outer layer or out
- 22. bad