Henry Carter Hull

It's a clash between two horned beasts! The rhinoceros is one of the largest animals living on land today. But millions of years ago, the triceratops was one of the biggest and most powerful beasts of its time. Learn what makes these similar creatures so impressive. Then decide which tanklike beast would achieve victory in a fight.

Scorpions and tarantulas may be small. But these two animals know how to fight! In this high-interest title, reluctant readers will learn about how these two creatures get ready to battle. Visual features offer stats and comparisons to highlight traits of each animal. A final fight scene applies the content of the book in an action-packed finale!

In this book, the acclaimed author of Sniffer Dogs details the successful efforts of scientists to bring threatened animals back from the brink of extinction. How could capturing the last wild California condors help save them? Why are some states planning to cull populations of the gray wolf, despite this species only recently making it off the endangered list? How did a decision made during the Civil War to use alligator skin for cheap boots nearly...

It's a fight between two fierce armored reptiles! Today's crocodiles are powerful, sneaky hunters. But millions of years ago, the deinosuchus was one of the biggest predators of its time. Learn what makes these similar beasts so dangerous. Then decide which of the fearsome foes would emerge victorious in a beastly brawl.

Why are monarch butterflies disappearing? Scientists are racing to find answers. These iconic orange, black, and white butterflies flutter across much of the North American continent, and are a familiar summer sight in many backyards. But in the last twenty years, the monarch butterfly population has been decreasing. Why? Skilled science writer Rebecca E. Hirsch takes readers on a quest to discover what scientists already know-and what they're hoping...

It's a battle between two fearsome, fanged beasts! Today, the Siberian tiger holds the record as the world's biggest cat. But in prehistoric times, the saber-tooth cat held that title as it prowled the land for prey. Learn what makes these similar animals such effective hunters. Then decide which fierce fighter would best the other in battle.

Two predators challenge each other for dominance in North America. Who will come out on top? Mountain lions and coyotes face off in this high-interest title. Reluctant readers will learn basic information about mountain lions and coyotes, as well as how these animals do battle. Action-packed images highlight the strengths of these animals, while animal profiles and other features show off their battle tools. Let the fight begin!

This title takes readers to musk ox habitats to understand why musk oxen are at risk, what humans are doing to make matters worse, and the ways humans can help to save musk oxen and ultimately, Earth. Sidebars, maps, and a glossary enhance readers' understanding of this topic. Additional features include a table of contents, an index, and a fact sheet. Aligned to Common Core Standards and correlated to state standards. Checkerboard Library is an imprint...

A tick cuts through a host's skin and begins to drink blood as its body slowly swells. Learn about the life cycles of ticks through amazing augmented reality experiences and tons of creepy, bloody details.