From food and water to medicine and electricity, communities rely on many resources to keep people healthy and safe. In this eye-opening series, young readers discover some of the workers who help provide these important resources. Each book also includes a table of contents, an On the Job special feature, quiz questions, a glossary, additional resources, and an index. This Focus Readers title is at the Pioneer level, aligned to reading levels of grades 1-2 and interest levels of grades 1-3.