could you please explain

Dear student,

Factor's necessary for photosynthesis are:

1. Sunlight
2. Carbon-Dioxode
3. Chlorophyll
4. Water

The two phases of photosynthesis are:

1.Light-dependent reactions or photosynthetic reactions (also called the Light reactions) capture the energy of light and use it to make high-energy molecules.

2.During the second phase, the light-independent reactions (also called the Calvin-Benson Cycle, and formerly known as the Dark Reactions) use the high-energy molecules to capture CO₂ and make the  precursors of carbohydrates.