Environmental Sciences is a multidisciplinary science guides in the way we should live in earth and helps to breathe the true essence of nature. It helps individuals to develop a better understanding of our living physical environment and how to resolve challenging environmental issues affecting nature. University Grants Commission (UGC) has made it mandatory for all the universities to introduce a course in environmental studies and teach students about the eco-system, pollution and problems concerned with the environment, in order to create awareness among today’s generation on pressing environmental problems. All Universities are offering a common Undergraduate course on Environmental Studies for all the degree programmes under various disciplines viz., Agriculture, Horticulture, Forestry, Sericulture, Food Nutrition and Dietetics, Agricultural Engineering and all other allied disciplines. This text book covers all important aspects of environmental sciences viz., Scope and Importance, Ecology, Ecosystem, Biodiversity and its conservation, Pollution problems, Social issues in environment, its effects, and management strategies. The chapters in this book are designed in an organized manner and the study materials are elaborated for ease and better understanding of students at Undergraduate level. This book will definitely serve as platform for undergraduate students to learn about basic concepts and would help them to excel in competitive exams viz., ARS, UPSC, and TNPSC and University level exams for pursuing their higher education in India and abroad.