Air

The video tutorial explains the composition and importance of air, highlighting its role in sustaining life on Earth. It discusses the sources of air pollution and the phenomenon of sky color. The tutorial also covers the atmosphere's layers and the effect of gravity on air density, explaining why breathing becomes difficult at higher altitudes. The video concludes with a thought-provoking question about the absence of air in space.

What is the composition of air?

What role does water vapor play in the atmosphere?

How does gravity affect the atmosphere?

Explain why it is harder to breathe at higher altitudes.

What are the four layers of the atmosphere?

Why is the troposphere important for life on Earth?

What happens to molecules in the exosphere?