Ozone gas is formed in the stratosphere of the atmosphere by chemical reactions due to natural causes. The actual signal of ozone gas is O 3 . The thick layer of ozone gas is called the ozone layer. The reason why the ozone layer is called the Earth's natural solar system is explained below: Just as the umbrella protects humans from the sun, so the ozone layer protects humans and other organisms from harmful ultraviolet ( UV-C and UV-B) rays of solar radiation. Ultraviolet rays are extremely deadly or deadly to the entire animal kingdom. Before the ultraviolet rays reach the earth's surface through solar radiation, they are absorbed by the ozone layer or ozone layer in the atmosphere, and the bright pure sunlight enters the earth. As a result, it cannot create havoc on the living world. In this context, the importance of the ozone layer is immense. This is why the ozone layer is called the 'natural solar system of the earth'.