Answer:
Yes! Here is your answer!
Explanation:
The geologic time scale (GTS) is a system of chronological dating that classifies geological strata (stratigraphy) in time. It is used by geologists, palaeontologists, and other Earth scientists to describe the timing and relationships of events in geologic history.
Not sure about the answer but I think its the size of the system
The oxygen cycle can be found in all but the geosphere. There's oxygen in the atmosphere, so it has to be there, and the biosphere includes living things, which breathe oxygen, and water (hydrosphere) is made up of partly hydrogen, so there has to be oxygen there as well.
More than likely the production of oxygen
