This book is a comprehensive & authentic book on ‘Environmental Studies’. This book aims to fulfil the requirement of students of undergraduate degree programs, particularly the Gauhati University and other Central Universities throughout India The Present Publication is the Latest Edition, with the following noteworthy features: The subject-matter is presented in simple, systematic method along with comprehensive explanation of the concept and theories underlying environmental studies. [Student-Oriented Book] This book has been developed, keeping in mind the following factors: o Interaction of the author/teacher with his/her students in the class-room o Shaped by the author/teachers experience of teaching the subject-matter at different levels o Reaction and responses of students have also been incorporated at different places in the book Covering more than 300 Subjective and Objective type questions Question appeared in Latest Question Paper of Delhi University have been incorporated at appropriate places