Across
- 2. - Inward-curved mirror
- 4. - Balloon-like air sacs in the lungs
- 6. - Tiny pores on leaf surfaces for gas exchange
- 7. - Breakdown of food into simpler substances
- 8. - Addition of oxygen or removal of hydrogen
- 12. - Bouncing back of light from a surface
- 14. - Process of releasing energy from food
- 15. - Coating iron with zinc
Down
- 1. - Insoluble solid formed in a reaction
- 3. - Removal of oxygen or addition of hydrogen
- 5. - Process by which green plants make food using sunlight
- 9. - Bending of light in another medium
- 10. - Reaction of acid and base
- 11. - Surface that forms images by reflection
- 13. - Distance between pole and focus