which gas in earths atmosphere forms ozone?\no oxygen\no nitrogen\no water vapor\no carbon dioxide

which gas in earths atmosphere forms ozone?\no oxygen\no nitrogen\no water vapor\no carbon dioxide
Answer
Brief Explanations:
Ozone ($O_3$) is formed from oxygen ($O_2$) molecules. High - energy ultraviolet radiation breaks oxygen molecules into oxygen atoms, which then combine with other oxygen molecules to form ozone.
Answer:
oxygen