The word ecology is of Greek origin. In Greek language 'Oikos' means house and 'logy' means scientific study. Thus the term ecology means study of the home. Ecology is a science. It is the study of the ways in which all life forms on earth relate to each other and how they exist in their physical environment and how they respond to it. Yes, ecology is an interesting subject. Because it deals with the study of the biosphere. It aims at understanding the relationship of living organisms to one another and their surroundings. Modern man and his civilization is a component of the biosphere. Biology, Chemistry, Geology, Physics are all parts of and related to ecology. Ecology is the study of the earth as the home of living organisms and the environment they live in.