- Sunlight: Sunlight provides the energy needed to drive photosynthesis.

- Carbon dioxide (CO2): Carbon dioxide is a gas that is present in the atmosphere and is taken in by plants through their stomata.

- Water (H2O): Water is absorbed by plants through their roots and is transported to the leaves.

- Chlorophyll: Chlorophyll is a green pigment found in chloroplasts, which are organelles in plant cells that are responsible for photosynthesis. Chlorophyll absorbs sunlight and converts it into chemical energy.

- Other nutrients: Plants also require other nutrients, such as nitrogen, phosphorus, and magnesium, for photosynthesis. These nutrients are usually obtained from the soil.