Question

What are reservoirs of oxygen?

Answer 1

Oxygen: The elemental form of oxygen found in the atmosphere is nearly 21%.

Reservoirs of oxygen: There are three main reservoirs of oxygen that are as follows:

1. Atmosphere: The main reservoir of oxygen in the atmosphere in which about 21% of oxygen is found.
2. Biosphere: The surface of the earth where living organisms survive is another major reservoir of oxygen such as Plants through photosynthesis release oxygen into the atmosphere which is consumed by other living organisms.
3. Lithosphere: The earth's crust is the reservoir of Oxygen.