The Ozone molecules which concentrated mainly between altitudes of 15 to 35 Kilometres above the Earth, where the umbrella of Ozone Layer absorbs the harmful ultraviolet radiation emitting from the Sun and facilitate life giving source of Solar energy to the planet Earth. But over the past half-century, humans have placed the Ozone Layer in jeopardy. Un-knowingly humans have released into atmosphere, chemicals that are destroying part of the Ozone Layer and thus upsetting the delicate balance established by the nature. Thickness of ozone layer is not a fixed quantity.
