Photosynthesis

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Across
  1. 2. a whole formed by a connection of two or more elements
  2. 4. plants give humans this
  3. 6. cells are made of this
  4. 7. a source of light and heat
  5. 8. contains chlorophyll and other pigments
  6. 9. things in our surroundings
  7. 11. produced by reactions involving atomic or molecular changes
  8. 13. the simplest structural unit of an element
  9. 14. organic compounds
Down
  1. 1. large organic molecules
  2. 3. the process that happens to a plant
  3. 5. makes the plant green
  4. 10. a sweet crystalline substance obtained from various plants
  5. 12. any substance that cannot be broken down into simpler