what are the three main reservoirs for oxygen cycle
Oxygen cycle. From Wikipedia, the free encyclopedia. Jump to: navigation, search. The oxygen cycle is the biogeochemical cycle that describes the movement of oxygen within and between its. three main reservoirs: the atmosphere (air), the biosphere (living things), and the lithosphere (Earth's crust). The main driving factor of the oxygen cycle is photosynthesis, which is responsible for the modern Earth's. atmosphere and life. [edit] Reservoirs and Fluxes.