The Ecology & Environment subject is an important component of the Civil Services Examination conducted by the Union Public Service Commission (UPSC). Aspirants who are preparing for this prestigious examination need to have a strong understanding of Ecology & Environment subject. This book of UPSC Power Bank of Ecology & Environment subject has been designed keeping in mind the needs of aspirants who are preparing for the Civil Services Examination. The book covers all the important topics of Ecology & Environment including Biodiversity, Ecology, Act & Policies, Environmental Organization, Environmental issues & Pollution. The questions in this book are comprehensive and have been curated after extensive research to ensure that they cover all the aspects of Ecology & Environment subject. Each question is accompanied by a detailed answer that not only explains the correct option but also provides additional information related to the question. This will help aspirants to build a strong foundation in Ecology & Environment subject and understand the subject in greater depth. The objective of this book is: 1. Assessing Knowledge: by testing the candidates’ understanding and knowledge of these topics. 2. Testing Critical Thinking Skills: to apply it in new and different contexts, analyse and evaluate information, and draw conclusions. 3. Providing Practice: by making them familiar with the format and style of UPSC questions. 4. Preparing for the Exam: by covering the same types of questions and difficulty levels as the actual exam. 5. Identifying Knowledge Gaps: By using the question bank, candidates can identify areas where they need to improve their knowledge or skills, and focus their study efforts accordingly. 6. Improving Time Management: This question bank provides a variety of questions that test different aspects of knowledge and skills, so that candidates can learn to manage their time effectively during the actual exam. 7. Encouraging Self-Assessment: By detailed explanations and solutions to each question, candidates can assess their own performance and identify areas for improvement. We hope that this book will prove to be a valuable resource for aspirants preparing for the UPSC Civil Services Examination and help them achieve their goals. We wish all the aspirants the very best for their preparation and future endeavours. We also express our gratitude to Ms. Geeta Rani who have contributed to the book, for her experience and knowledge. Her contributions will help our readers gain valuable insights and knowledge and secure a high rank in the UPSC examination. We wish the readers great success ahead!