The book I just read is called The Lost Hero by Rick Riordan. The main characters are Jason, Piper, and Leo. This story is about how Jason, Piper, and Leo learn they are demi gods and they are sent on a quest. As demi-gods they are half god, half human. Jason and Leo are omnivores since they eat meat and plants. Piper is a vegetarian which means she's a herbivore. They meet many bizarre creatures, in this story, as they try to complete their quest.
At one point, two of them end up dangling from chains, roasting over a fire as a family of carnivores are waiting for their food, Piper and Jason, to cook. They are Cyclops. In the beginning of the book, their coach is a Satyr so he eats plants and he is a herbivore. The ogres are carnivores and Enceladus, the giant is a carnivore also. Gaea is the greek personification of earth and is a carnivore. The Hunters of Artemis are Omnivores. This book is an amazing book and as you can see, the characters fill the roles that we learned about in an ecosystem.
