“Bacteria produce useful nutrients. But if they get on our hands or back inside our bodies, they can make us sick.”
Toilet: How It Works | 
“Bacteria produce useful nutrients. But if they get on our hands or back inside our bodies, they can make us sick.”
This book teaches the readers of exactly what happens when they use the toilet.
pickToilet: how it works by David macaulay is a nonfictional book that was published in 2013. This book is unique and scallions hoe a toilet works. This book explains what happens to the waste and where it goes once it is flushed. The readers are taken in a tour of the bathroom and the sewer system.
