A Study on Ozone Depletion in Environment

This paper describes the protective action of stratospheric ozone together with different mechanics causing ozone depletion. Stratospheric ozone depletion has been much studied as a case history in the interaction between environmental science and environmental policy. The positive influence of science on policy is often underscored, but here I review the photochemistry of ozone in order to illustrate how scientific learning has the potential to mislead policy makers. The object of this paper is to review the origin, causes, mechanism and bio effects of ozone layer depletion as well as the protective measures of this vanishing layer. The chlorofluro carbon and some gases are pretent ozone depletors. One of the main reasons for the widespread concern about depletion of the ozone layer is the anticipated increase in the amounts of ultraviolet radiation received at the surface of the earth and the effect of this on human health and on the environment. The future behaviour of ozone will also be affected by the changing atmospheric abundances of methane, nitrous oxide, water vapour. Even for the well-studied case of ozone depletion .Further research is needed on the dynamics of scientific learning,particularly the scientific assessment process how assessment influence the development of public policy.