How do cacti stay alive in the desert? Why are poison dart frogs so brightly colored? This engaging graphic novel helps answer these questions by introducing readers to plant and animal adaptations to changing environments. Through an exploration of such topics as basic needs, natural selection, ecosystems, and adaptations, students will learn how animals evolve over time. This text was designed to help readers think about plant and animal adaptations in a broad context, such as how changes affect other organisms and the environment. Along the way, readers will be introduced to Charles Darwin and can learn how to become ecoscientists with an included activity. To explore more of the changing worlds of plants and animals, check out other titles in the Building Blocks of Animals and Plants series!