Gr 4-6-As the series implies, the perspective here is on "gross," "disgusting," and "nasty" but necessary and healthy body functions that are outlined through a mix of facts and descriptions of possible scenarios. Normal body fluids are explained, including their production and purpose. In some titles, relevant health issues such as blood-borne diseases (Blood), dehydration (Sweat), and kidney stones (Pee) are described. Slang terminology, "Gross Fact" boxes, and an occasional full-page sidebar of related information extend the content. Same-page definitions and labeled diagrams add ease of use. Unfortunately, the studio photos that make up more than 50 percent of the visuals often add little. Still, these are good general purchases that will draw interest.[Page 37]. Copyright 2008 Reed Business Information.