The depletion of the ozone layer done the icy region has reached an extraordinary level, a loss of 40% from the foundation of the winter to dear departed stride, the U.N. weather agency whispered Tuesday.The humanity Meteorological Organization blames the recording loss on the continuing presence of ozone-depleting substances inwards the tone and a very cold winter inwards the stratosphere.The ozone layer is the shelter to facilitate protects life on Earth from damaging levels of ultraviolet energy, the organization supposed.Even though this sub-zero winter was warmer than be an average of by ground level, it was colder taking part in the stratosphere than on behalf of a routine sub-zero winter, the agency held.