In order to survive in an environment, organisms have many different physical characteristics that help them regulate their temperature, move, find food, and protect themselves. The students' first analyze data from a case study on the peppered moth, learning about how organisms are adapted to their environment and how a change can affect their ability to survive. Students then explore physical adaptations from feet to teeth to color in order to develop an argument from evidence as to why an organism can survive well in one environment and less well in another. This book is a self-directed learning experience designed to augment understanding of science content. Lexile Framework: 720L