Ozone shield is a part of stratosphere in which the concentration of ozone is very high. ft is called as ozone shield because it prevents the sun, UV-radiations entering the earth atmosphere and in this way protects the living beings from harmful effects of these radiations Stratospheric ozone depletion results in the impairment of photosynthetic machinery in green plants which increases CO2 concentration and result in global warming and skin ***** and cataract in humans.
CFCs and CH2 gases cause damage to ozone shield.
