Question

◆We are lucky that ozone is not stable near Earth's surface.

(* Give according to 4 marks question *)

Answer 1

Because its poisonous to living organisms. Since, its floating in the atmosphere as a layer..it doesn't affect us.
Near the earth's surface ozone is an air pollutant. It causes many human health effects which are mainly related to respiratory problems. It also affect vegetation and many other materials. It acts as greenhouse gas. It also contribute to urban smog, which is also an air pollutant. 

Answer 2

HELLO DEAR,

➡️we know that the ozone is a combined form of three oxygen

though it protects from ultraviolet radiation (U.V) from the sun,

It causes many human health effects which are mainly related to respiratory problems.

It also affect vegetation and many other materials.

if it was stable near the Earth we would have no leaved that's why "We are lucky that ozone is not stable near Earth's surface."⬅️


I HOPE ITS HELP YOU DEAR,
THANKS