Question

Describe how ozone layer formed

Answer 1

Ozone layer is formed naturally by chemical reactions involving solar ultraviolet radiation and oxygen molecules which make up 21% of the atmosphere.

Answer 2

Formation of the Ozone Layer. Over two billion years ago, early aquatic organisms called blue-green algae began using energy from the Sun to convert molecules of water (H2O) and carbon dioxide (CO2) and recombine them into organic compounds and molecular oxygen (O2).