The thouroughly Revised & Updated 2nd Edition of the book “The Ecology & Environment Compendium” is the Most Updated Material for Ecology covering the social, political and economic aspects of Climate Change, Sustainable Development and Environmental Management. The emphasis of the book has been on Policies, Summits, Reports, Initiatives, new terms, Judgements etc. , which are important from the point of view of the exam. The book covers a lot of new topics Eco-San, REDD, REDD+, Paris Agreement, Rio Declaration, COP, In Situ, Ex Situ, Cli-Fi, Green Economy, Carbon - Foorprints/ Trading/ Budget, etc. The book captures most of the important questions with explanations of the past years of the IAS Prelim exam, CDS, NDA and other competitive exams distributed in the various chapters. The book is divided into 9 chapters followed by 2 levels of exercises with 800+ Simple MCQs & statement based MCQs.