Across
- 2. - Gradual destruction of metals
- 5. - Process of releasing energy from food
- 8. - Tiny pores on leaf surface
- 9. - Reaction between acid and base
- 11. - Formed by reflection or refraction
- 12. - Removal of oxygen
- 14. - Breakdown of complex food
Down
- 1. - Taking digested food into blood
- 3. - Addition of oxygen
- 4. - Process by which plants make food
- 5. - Bending of light
- 6. - Distance between pole and focus
- 7. - Lens thicker at the centre
- 10. - Reflects light
- 13. - More reactive element replaces less reactive one