To keep our environment healthy and safe are two of the big challenge to the nations. There is urgent need to control the ever increasing population, keep the nature pure, to control the pollution, to regulate the emission of greenhouse effect, conservation of forest and wild life ete. Perhaps our blue planet is about to lose his threshold limit The book covers the UGC and AICTE syllabus for undergraduate course, and also the syllabus for technical and other Universities for different disciplines, may it be in the name of environmental education, environmental science, ecology, or natural resource management. Key features of the book include a simple and holistic approach with illustrations, tables and specific case studies. Besides being a textbook, this could be a guide to the public at large All the requested to give input to us in order to make this book into a substantial one. The book on subjected to every citizen of India for his/her acceptance and approval. Various figures How diagrams and illustrations have been incorporated for easy grasp of the subject. It is hoped that the present edition will be very useful to the students and teachers