Toilets flush away waste to keep cities clean and people healthy. How Toilets Flush and Fill introduces the parts of a toilet and explores how they work. Easy-to-read text, vivid images, and helpful back matter give readers a clear look at this subject. Features include a table of contents, infographics, a glossary, additional resources, and an index. Aligned to Common Core Standards and correlated to state standards. Kids Core is an imprint of Abdo Publishing, a division of ABDO.