The dark reaction of photosynthesis, also known as the Calvin cycle, doesn't use "raw materials" in the same way the light reaction does. It uses the products of the light reaction, which are:

* ATP (adenosine triphosphate): The energy currency of the cell.

* NADPH (nicotinamide adenine dinucleotide phosphate): An electron carrier that provides reducing power.

* CO2 (carbon dioxide): This is the main "raw material" of the Calvin cycle.

The Calvin cycle doesn't directly use light energy like the light reaction does. It uses the chemical energy stored in ATP and the reducing power of NADPH to convert CO2 into glucose.

Here's how the Calvin cycle uses these inputs:

1. Carbon fixation: CO2 is combined with a 5-carbon molecule called RuBP (ribulose bisphosphate) to form a 6-carbon molecule that quickly splits into two 3-carbon molecules called 3-PGA (3-phosphoglycerate).

2. Reduction: ATP and NADPH are used to reduce 3-PGA to G3P (glyceraldehyde 3-phosphate).

3. Regeneration: Some G3P molecules are used to make glucose, while the rest are recycled back to regenerate RuBP, allowing the cycle to continue.

So, while CO2 is the main "raw material" in the Calvin cycle, it's crucial to remember that the cycle relies heavily on the products of the light reaction to function.