This book covers the complete syllabus of “Environmental Studies” in various Technical Universities. A simple up-to-date description of all the aspects of Environmental studies has been dealt in detail keeping in view the general interest of all the students. A special feature of this book is the number of self explanatory figures and tables included in various chapters. Each chapter also has exercises of important queries. At the end of the book important dates related to environment, a glossary of difficult words and index has also been added.