How often does oxygen cycle through the atmosphere?

Oxygen resides in the atmosphere for about 4,500 years. It usually takes about 2,000 years to cycle through

the actual answer was 160934

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.