* Nitrogen (N2): This makes up about 78% of the air we breathe, even though it's not directly used by humans.
* Oxygen (O2): This is the life-giving gas we need to survive, making up about 21% of the air.
* Argon (Ar): This inert gas makes up about 0.93% of the air.
* Carbon Dioxide (CO2): While a small amount, this greenhouse gas is vital for plant life and is increasing due to human activities.
* Other Gases: Air also contains small amounts of other gases, including neon, helium, methane, and krypton.
In addition to gases, air also contains:
* Water Vapor (H2O): The amount of water vapor in the air varies depending on location and weather conditions.
* Particles: Dust, pollen, smoke, and other tiny particles are also present in air.
It's important to remember that the composition of air can vary depending on factors like location, altitude, and even weather conditions.
