Here's why:
* The atmosphere is a vast reservoir: The atmosphere contains a massive amount of oxygen, about 21% by volume. Removing a significant amount would be practically impossible and have devastating consequences.
* Oxygen is constantly replenished: Photosynthesis by plants and algae continually produces oxygen, replacing what is used.
* We use oxygen directly: We breathe oxygen directly from the air, and it's essential for cellular respiration, which provides energy for our bodies.
* Industrial uses: Some industries use oxygen, but this is done through processes like air separation, which extracts oxygen from the air without removing it permanently.
Therefore, oxygen gas is not "removed" and used in a way that would deplete the atmosphere. We rely on the natural cycle of oxygen production and consumption.
