Atmosphere

The video explains the atmosphere as a layer of gases surrounding Earth, held by gravity, essential for life by trapping heat and forming weather. It introduces the greenhouse effect and the ozone layer's protective role. The atmosphere's composition is mainly nitrogen and oxygen, crucial for life. It is divided into layers: troposphere, stratosphere, mesosphere, and thermosphere, each with distinct characteristics.

Why is oxygen important for life on Earth and how does the atmosphere provide it?

Can you describe the different layers of the atmosphere and their characteristics?