Photosynthesis

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Across
  1. 2. as this increases so the rate of Stage 2 PNS also increases
  2. 4. dioxide (6/7) usually the most limiting factor for PNS, it is a gas
  3. 6. main product produced by PNS
Down
  1. 1. on cloudy winter days this can be the most limiting factor on PNS
  2. 3. glucose is this type of nutrient
  3. 5. this stage of PNS requires light