Climate is defined as the weather conditions which have prevailed in a region over a long duration of time. Climate plays an important role in determining the our basic needs like the type of food, clothing and shelter as well as our occupations. For example, people living in colder rgeions would eat food which liberate more of heat to keep them warm whereas people living in hotter areas food eat food which have cooling properties. From this one example we can understand how important climate is for all the living beings on this earth. The type of vegetation, animal, birds, insects which are found in a region is determined by its climatic conditions like polar bears are found in polar regions (arctic and antartic) whereas camels are found in desert areas. These are just few examples which explain the importance of climate. We have often read and heard about global warming and its disastrous effect on the climate. Any effect on the climatic conditions of a region would directle effect the existence of living beings in that region.