<human>:  Explain the process of photosynthesis.
<bot>: Photosynthesis is the process by which plants, algae, and some bacteria convert the energy from sunlight into chemical energy. This chemical energy is stored in the bonds of sugar molecules such as glucose. During photosynthesis, carbon dioxide from the air is used along with water from the soil to produce glucose and oxygen. The glucose is used by the plant for energy and growth. The oxygen is released into the air. Photosynthesis occurs in two stages. The first stage is called the light reaction and requires light energy. This stage transforms light energy into chemical energy in the form of ATP and NADPH. In the second stage, called the dark reaction, the ATP and NADPH produced during the light reaction are used to convert carbon dioxide into glucose.