Across
- 3. distance between pole and principal focus
- 4. centre of the spherical mirror
- 6. - Absorbs digested food into blood
- 7. - movements that contract and expand muscles of oesophagus
- 8. black coating on silver
- 10. - diverging mirrors
- 11. Inner lining of stomach
- 13. - addition of oxygen or removal of hydrogen
- 14. - oxidation of fats and oils when exposed to air
Down
- 1. bouncing back of light on same medium
- 2. converging mirror
- 5. substance used for white washing
- 8. - addition of hydrogen or removal of oxygen
- 9. enzymes hat break into proteins
- 12. glands that secrete saliva+ mucus