Book excerpt: NSTA/CBC Outstanding Science Trade Book Why would several monkeys suddenly fall from the trees? How do tiny frogs make deadly poisons? Why are passionvines so difficult to find? These are some of the mysteries explored in this fascinating nonfiction picture book. Why do certain plants harbor hordes of biting ants? What kind of creature pollinates an odd-looking flower? Each of the eleven ecological mysteries in this book follow scientists as they track down clues, set up curious experiments, and ultimately discover some of the surprising and hidden connections that make tropical forests so fascinating—and so fragile. Carefully researched illustrations help readers visualize tropical forests, diverse plants and animals, and the details of each mystery.