(a) Describe the role and importance of stratospheric ozone to life on Earth.
(b) Suggest ONE possible reason for the appearance of the hole in the ozone
layer, which was first observed in the 1980s.
(c) Ultraviolet (UV) radiation occurs in three forms, known as UVA, UVB,
and UVC.
(i) Describe at least ONE characteristic of EACH form of ultraviolet
radiation.
(ii) Describe the effects that increased UV radiation would have on: (a)