This book is designed to help undergraduate (engineering and arts/science) students learn concepts of environmental and its protection. It is written in a clear/concise style and easily understandable manner. Nevertheless, it is very useful for creating the awareness of the environment Features: 1. Clear terminology and presentation 2. Neat illustrations supporting the concepts 3. Clear explanation using number of diagrams 4. A list of questions are given for self examination in each chapter 5. Case studies are discussed in each chapter