INTRODUCTION : The Environment in encompasses all the area where the Plants, Flora and Fauna, Animals and Humans Beings Live and Breathe-all Biotic and A-Biotic things occurring naturally which is not artificial. So, the term is often applied to the Earth. This is a Natural World comprises of Land, Air and Water, the interaction of all living species, climate, weather, and natural resources that effect human survival and economic activities. The atmosphere of the Earth serves as a key factor in sustaining the eco-system. The Dry Air consists of 78% of Nitrogen, 21% of Oxygen, 1 % of Argon and other inert gases and Carbon dioxide. The greenhouse gases consist of Carbon dioxide, Methane, Nitrous oxide, and Ozone. It may also include chemical compounds industrial pollutants such as chlorine, Fluorine, Mercury, Sulfur and Sulfur dioxide. When we talked about pollution on Earth, we referred to the contamination that is happening of the natural resources by various pollutants. All this is