Answer: The reactants in a dark reaction are carbon dioxide (CO2) and water (H2O).
Step-by-step explanation:
Dark reactions are a type of photosynthetic reaction.
Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
Dark reactions occur in the grana of chlorophyll and get energy from ATP and NADPH.
The reactants are carbon dioxide (CO2) and water (H2O).