Explanation:

As stratosphere contains the major portion of ozone, it is here that maximum ozone depletion takes place. The ozone layer lies in the stratosphere, in the upper level of our atmosphere. The ozone in it is spread very sparsely.

Stratospheric ozone filters out most of the sun’s potentially harmful shortwave ultraviolet (UV) radiation. This ozone has become depleted, due to the release of such ozone-depleting substances as chlorofluorocarbons (CFCs). When stratospheric ozone is depleted, more UV rays reach the earth. Exposure to higher amounts of UV radiation could have serious impacts on human beings, animals and plants.