The environment and climate change are the most important issues in the modern world. This book will contribute to a better understanding of concepts in the field of the environment and other related fields, as well as assisting students in scoring higher marks in a number of competitive exams. This book is focused on the environment, including subjects like environmental ecology, hydrogeology, bio-diversity, natural hazards and disaster management, climate change and other environmental problems. Some of the topics discussed in the book include environmental laws, soil science, natural disasters, the Earth's internal structure, sea floor spreading, plate tectonics, food chains, carbon sequestration, agriculture, ecological succession, and government and non-governmental organizations working in the field of environmental issues, among others.