What is ozone and how does it affect any ecosystem?

Dear Student

Ozone is a molecule of oxygen with 3 atoms its formula is O3. The ultra violet radiations split oxygen into free oxygen atoms, these atoms combine with oxygen molecules to form ozone.
UV
O₂ ------------------> O + O
rays
O_{2 +}O ------------------> O₃( Ozone )

Ozone Ecosystem:
At ground level ozone is poisonous but at higher level it is very useful as it protects all living organisms from harmful UV radiations of the sun. It doesnt allow , the ultra violet radiations to enter the surface of earth. The UV radiations cause ionizing effect that leads, to skin cancer in human beings.

Thanks