This book integrates some of the key issues and concepts pertaining to ecology, environment and conservation. The rapid degradation of natural resources, diminishing reserves of conventional fuel and mineral sources, and the impoverished state of environmental health has necessitated the re-evaluation of damage caused by various industrial and human activities. The topics covered in this extensive book deal with some of the crucial aspects such as emerging trends in recycling and waste management, strategies to improve sustainability and productivity, diverse branches of ecology, population dynamics and utilization of natural resources, green house effects, etc. From theories to researches to practical applications, case studies related to all contemporary topics of relevance to this field have been included in this book. This book is a resource guide for experts as well as students.