No, air is not 100% oxygen.
Air is a mixture of different gases, and according to the provided reference, the air in Earth's atmosphere is composed of approximately 78% nitrogen and only about 21% oxygen. It also contains small amounts of other gases such as carbon dioxide, neon, and hydrogen.
Here is a breakdown of the major components of air:
| Gas | Percentage |
|---|---|
| Nitrogen | 78% |
| Oxygen | 21% |
| Other Gases | 1% |
Therefore, while oxygen is a vital component of air for breathing, it is not the only gas present, nor is it the largest percentage. It is important to understand that air is a mixture of different gases that each play a vital role in the planet's ecosystem.
