"Extreme" means to a very great degree. An extreme material could be the rarest there is. The deep ocean is an extreme habitat. Even gravity can be an extreme force! In this set, readers learn about extreme qualities and experiences as well as how things have evolved and adapted to reach their extreme state. The main text looks at how we can gather scientific information from these extreme states, forces, materials, plants, and other living things. Presented in a highly accessible way, this series appeals to visual learners with its awesome design and graphics.