This book covers courses in Environmental Studies compulsory for B.A., B.Sc. and & B.Com. students in all the Indian Universities. As per core Modules syllabus the book has been divided in seven units as follows: i. The Multi disciplinary Nature of Environmental Studies ii. Natural Resources iii. Ecosystems iv. Biodiversity and its conservations v. Environmental Pollution vi. Social issues and The Environment vii. Human Population and The Environment While matter has been gathered from authentic sources, Data have been updated through INDIA 2004. All the units have been further divided into Chapters according to UGC core Modules syllabus. Questions have been given at the end of each Chapter for exercise.