"Truly speaking, an environment is everything that is around us, which includes both living and non-living things such as soil, water, animals and plants, which adapt themselves to their surroundings. In fact, it is nature's gift that helps in nourishing life on Earth. However, rapid growth in technology, urbanization and industrialization has caused degradation of natural environment.

This is an alarming situation for humanity. We will have to protect our nature and natural resources for better future of upcoming generations on the planet Earth. This book presents the subject matter in a lucid and precise manner for students and aspirants of various competitive exams."