What is released as a byproduct of photosynthesis?

During photosynthesis, plants, algae, and some bacteria convert carbon dioxide and water into glucose and oxygen, using sunlight as energy. The overall chemical equation for photosynthesis can be summarized as:

6 CO₂ + 6 H₂O + light energy → C₆H₁₂O₆ + 6 O₂

In this process, oxygen is produced as a byproduct when water molecules are split to release the hydrogen needed to convert carbon dioxide into glucose. This oxygen is then released into the atmosphere, which is a critical aspect of the Earth's ecosystem, as it provides the oxygen that most living organisms need for respiration.

This release of oxygen is fundamental to life on Earth, supporting a diverse range of organisms that rely on it to survive. The other substances listed, such as carbon monoxide, ozone, and hydrogen sulfide, are not products of photosynthesis and do not play the same essential role in the process.