What is the use of the sun for our planet?

Without the sun, life would never have arisen on our planet. The sun provides the vital activity of all living organisms, without exception. Take the simplest algae, for example. They need sunlight to maintain all vital functions. Plants use the sun to produce chlorophyll useful for them. Without it, the flora will simply cease to exist, and we are at the same time. For people, the sun has undeniable benefits. When people sunbathe in the sun, their skin takes on a golden hue. This procedure is similar to hardening.