Download or read book 20 Fun Facts About the Respiratory System written by Zelda Salt and published by Gareth Stevens Publishing LLLP. This book was released on 2018-12-15 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oxygen is one of the most essential needs for life on Earth, and respiration is how living things use it. But there's a lot more going on in this seemingly simple process than you might think. The respiratory system is in some ways the most underappreciated of the body systems, since it works 24/7, mostly without being noticed, and never gets a single moment's rest. In this book, readers discover the most fascinating facts about respiration, the structure of the lungs, and even some of the seemingly gross processes that happen in their body!