What are the reactants for stage 2 of photosynthesis and where do they come from

Stage two: carbon fixation

Photosynthesis requires sunlight, carbon dioxide, and water as starting reactants. After the process is complete, photosynthesis releases oxygen and produces carbohydrate molecules, most commonly glucose. These sugar molecules contain the energy that living things need to survive. During the second stage, carbon dioxide is used, and glucose is produced. The ATP is broken down to release energy which is used to combine hydrogen with carbon dioxide to produce sugar.

Explanation:

light dependent reactions:

light independent reactions:

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