Facts101 is your complete guide to Environmental Science. In this book, you will learn topics such as Ecosystems: What Are They and How Do They Work?, Biodiversity and Evolution, Species Interactions, Ecological Succession, and Population Control, and The Human Population and Urbanization plus much more. With key features such as key terms, people and places, Facts101 gives you all the information you need to prepare for your next exam. Our practice tests are specific to the textbook and we have designed tools to make the most of your limited study time.