The process that produces glucose and oxygen gas from carbon dioxide and water is called photosynthesis. It is carried out by plants, algae, and some photosynthetic bacteria. Photosynthesis uses the energy from sunlight to convert carbon dioxide and water into glucose, which is a sugar that plants use for energy, and oxygen gas, which is released as a byproduct of the reaction. The overall chemical equation for photosynthesis can be summarized as:

```

6CO2 + 6H2O + light energy → C6H12O6 (glucose) + 6O2 (oxygen)

```