In the Vital to Earth! Keystone Species Explained series (6 titles), readers get a chance to learn about plants and animals that play important roles in their ecosystems. Beavers highlights these adorable creatures' skill at building ponds and dams, which, in turn, help protect the wetlands where they and countless other creatures live. Each book offers an easy, quick, and informative read and ends with lessons on how people can save these species and their ecosystems. A glossary and further-reading list concludes, the latter also featuring a QR code linking to online resources. This series will make a solid addition to science collections and help students learn about the flora and fauna that keep the natural world in balance.