Science Crossword Puzzle

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Across
  1. 4. Bending of light as it passes from one medium to another
  2. 5. New substances formed in a reaction
  3. 8. Process of releasing energy from glucose
  4. 9. Small pores in leaves for exchange of gases
  5. 11. Mirror that converges parallel rays
  6. 13. Addition of hydrogen or removal of oxygen
  7. 14. Structural and functional unit of kidney
Down
  1. 1. Reaction that releases heat
  2. 2. Substances that undergo change in a reaction
  3. 3. The axis that passes through the center of curvature of a mirror
  4. 5. Process by which green plants make food
  5. 6. Loss of water vapour from stomata of leaves
  6. 7. Splitting of white light into seven colors
  7. 10. Addition of oxygen or removal of hydrogen
  8. 12. Mirror that diverges light rays