9The food chain is an incredible and delicate system that shows the flow of energy throughout an ecosystem. This title explains what this energy is, how it is used, and what producers are and how they are a part of the food chain. The book is complete with colorful photographs and clear and informative photo diagrams and text. Aligned to Common Core Standards and correlated to state standards. Abdo Kids Jumbo is an imprint of Abdo Kids, a division of ABDO.