Question

describe how ozone layer is form according to 2 marks

Answer 1

ozone is formed naturally by chemical reactions involving solar ultraviolet radiation (sunlight) and oxygen molecules, which make up 21% of the atmosphere. In the first step, solar ultraviolet radiation breaks apart one oxygen molecule (O2) to produce two oxygen atoms (2 O) 

Answer 2

The large in the earth's stratosphere at an altitude of about 10 km(6.2 miles) containing a high concentration of ozone, which absorbed most of the ultraviolet radiation reaching the earth from the sun.