IR Wavelengths Ultraviolet radiation is of particular relevance to a study of the ozone layer. Why? What about UV radiation affects ozone? What role does oxygen play with regard to filtering sunlight? What does ozone do that oxygen (or any other molecule) do? How? Ozone is created in what is believed to be a two-step process. It is destroyed naturally in one of two pathways. What are those reactions? On Your Own: What is the role of UV in the destruction of ozone?