The revised edition of Environment and Ecology is a Complete Guide on these topics for the Civil Services Preliminary and Main Examinations. It will also be useful for those appearing in the Indian Forest Service Examination. The book will strengthen the aspirant’s conceptual understanding of the topics, even as it prepares her or him for the examinations. In tune with the kind of questions asked in the Civil Services Examination, it has a strong focus on India, while covering the major international issues. The government policies, laws and regulations are covered in a comprehensive manner. The Question-Answer format has been used to make the book directly useful for the aspirant. The book promotes critical thinking needed for the Examination by presenting diverse aspects of each issue using a prescriptive approach. Written in simple and lucid language, the book will serve as a comprehensive reference book on environment and ecology for the Examination. New to the Revised Edition: Solved papers for the Preliminary Examination of the years 2016 and 2017 Chapter-wise analysis of the questions of the Main Examination 2016. Key features: Trend analysis for the question papers from 1987 to 2017. Coverage of the latest developments in the field of Environment and Ecology. Lead stories in all the chapters to improve understanding while creating an interest in the topic. Chapter-wise categorization of the past questions of Civil Services Preliminary and Main Examinations, with comments where necessary. Model answers for the questions of Main Examinations and a Question Bank for the Preliminary and Main Examinations, based on latest pattern of the UPSC.