What are the characteristics of the layers of the sun?

The sun has an atmosphere which has three layers. It is composed of the photosphere, chromosphere, and the corona. It has a core which is made up of hydrogen gas. The pressure of the surrounding layers initiates a fusion reaction of the helium with the hydrogen.

Then is the radiative zone, this is the zone that constantly absorbs the protons emitted from the core and then reemits them. The connective zone drops the temperature by 2 million degrees. This helps the light get through. Photosphere s the surface of the sun. It has sunspots and other surface features of the sun. Then is the chromosphere which is made of gases. Then is the corona which is the outermost and also the thinnest layer of the sun.