photosynthesis

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Across
  1. 4. substance or compound added to a system to cause a chemical reaction
  2. 6. is the powerhouse of the cell
  3. 8. the process by which organisms combine oxygen with foodstuff molecules
  4. 9. a process that leads to the chemical transformation
  5. 13. green pigment found in plants
  6. 14. colorless and non-flammable gas at normal temperature and pressure
  7. 15. is a process used by plants,organisms
Down
  1. 1. an electrically neutral group of two or more atoms
  2. 2. specialized structures that perform various jobs inside cells
  3. 3. the smallest unit
  4. 5. an organic compound
  5. 7. the biogeochemical cycle by which carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth
  6. 10. the outcome
  7. 11. O.2
  8. 12. a simple sugar