Photosynthesis

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Across
  1. 2. Gives the plants its green colour
  2. 3. Plants take in this gas expelled by humans and animals
  3. 6. A form of energy that plants use to start
Down
  1. 1. The food made by plants is a form of sugar called
  2. 4. Plants produce this gas which is vital for humans and animals
  3. 5. Name of the entire process in which plants prepare its own food