photosynthesis resperation

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Across
  1. 2. perform photosynthesis because it generates
  2. 5. energy into chemical
  3. 9. sun,
  4. 10. from
  5. 11. plants to perform photosynthesis they require light
  6. 12. fuel the organisms' activities.
  7. 13. other organisms transform light
  8. 14. to make food from sunlight,
  9. 17. it is the number one source of oxygen in
  10. 18. pores called stomata.
  11. 20. in turn, exhale the carbon dioxide needed by plants.
Down
  1. 1. dioxide and water in the atmosphere
  2. 3. split water molecules into oxygen and hydrogen.
  3. 4. is what traps the sun's energy.
  4. 6. is their primary source of energy.
  5. 7. is the green pigment in a plant's leaves.
  6. 8. to convert
  7. 15. as a source of food for ourselves and for
  8. 16. is absorbed from the soil into the cells of roots.
  9. 19. process used by plants and other