How does oxygen move through the atmosphere?

Oxygen moves through the atmosphere primarily through two processes: diffusion and convection. Diffusion allows oxygen molecules to spread from areas of higher concentration to areas of lower concentration, ensuring even distribution. Convection, driven by temperature differences, facilitates the vertical movement of air, mixing oxygen throughout different layers of the atmosphere. Additionally, photosynthesis by plants continuously replenishes atmospheric oxygen, contributing to its movement and concentration in the air.