The book offers a definite and concrete approach on various aspects of Environment based on the directives provided in the syllabus of the Civil Services Examination. The range and scope of the content is such that it will be useful for various other competitive examinations where questions on environment, ecology, biodiversity, climate change, etc. are asked. The content of the book has been covered in the broad topics/chapters given here. All these topics have the latest data, information on all policies, legislations, amendments, bills, acts, etc. Boxed items for easy recap, summary, multiple choice questions and probable questions for Mains are given wherever relevant.