What is the calvin Cycle?

The Calvin cycle is a metabolic pathway found in the stroma of the chloroplast in which carbon enters in the form of CO₂ and leaves in the form of sugar. The cycle spends ATP as an energy source and consumes NADPH₂ as reducing power for adding high energy electrons to make the sugar. There are three phases of the Calvin cycle. Phase 1 is called carbon Fixation. Phase 2 is called reduction. And phase 3 is called regeneration. All of these phases all lead to the regeneration of ATP and converting NADPH_{2. ATP left and NADPH2 right.}