What is ozone? How is it formed in the upper layers of the Earth's atmosphere

What is ozone? How is it formed in the upper layers of the Earth's atmosphere? How does ozone affect our ecosystem?

• Answer:

  Ozone is a molecule formed by three atoms of oxygen.

  UV radiations split some molecular oxygen (O₂) into free oxygen atoms (O + O). These atoms then combine with molecular oxygen to form ozone.

  

  Ozone layer shields the surface of the earth from damaging UV radiation of the sun. / Depletion of ozone layer causes harmful effects on the organism.

• Exam Year: 2022