photosynthesis

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Across
  1. 3. Plants wouldn't have been green without this!
  2. 5. The two pigment system theory of photosynthesis was proposed by
  3. 6. Photosynthesis increases the concentration of oxygen in air, which is necessary for all.
  4. 7. process by which plants make their own food
  5. 10. Glucose and oxygen combine to form carbon dioxide and water plus.
Down
  1. 1. Great for plants but bad for us!
  2. 2. Photosynthesis occurs in
  3. 4. Photosynthesis decreases the concentration of carbon dioxide in air and other harmful wastes, this increases the purification of respiratory disease for.
  4. 7. All animals need oxygen and most of this oxygen comes from.
  5. 8. Plants wouldn't have been green without this!
  6. 9. Only _________ plants can photosynthesize.