Where does the Oxygen (O2) waste produced in photosynthesis come from?

Actual age your first developed of age well comparison age refers to absolute age true or false

The idea that all living things are made up of cells is considered scientific law. this means the idea is an emerging scientific idea that has a logical explanation. has been tested with similar results at least twice. is supported by scientific consensus and a large amount of evidence. has been rejected only once by the scientific community

What is usually (but not always) related to the metabolic processes of living organisms in its organic form?