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What do bogs, marshes, and swamps have in common? They're all kinds of wetlands, which are fascinating ecosystems that are home to myriad species of plants, animals, and microbes. These organisms are adapted to both dry and watery conditions. In this valuable volume, the most interesting and informative facts about wetlands are presented through accessible text and colorful photographs. Essential concepts of the elementary science classroom, such as adaptations and habitats, are given special attention. Graphic organizers help clarify and review key ideas for budding ecologists.

The electoral college is a term often heard during U.S. presidential elections. This process is how Americans select their president and vice president. While many older people are still unsure of how it works, young political scientists will have all the answers after reading this valuable volume. They'll learn why the electoral college was established by the Constitution, how it has worked throughout U.S. history, and the controversies surrounding it today. Important social studies vocabulary, photographs of elections in action, colorful maps, and quotes and explanations from historical figures shed light on this need-to-know issue.

Without the promise of a statement of rights, the U.S. Constitution might never have been ratified. And without the aid of this time-traveling trio of kids, the Bill of Rights might not be what it is today, at least that's how this entertaining trip back in time tells it. Gaby, Zoe, and Will are in the thick of the action as Founding Father James Madison helps craft the first 10 amendments to the Constitution. Budding historians will love learning about these rights through the adventures of relatable young characters, fact boxes, historical images, and other beneficial text features.

Who needs rules? -- Communities and rules -- Rules and responsibility -- Natural and positive laws -- History of law -- Systems of law -- Federal and state laws -- Criminal law -- Civil law -- Courts, lawyers, and judges -- Do laws change? -- Living with laws

Cover -- Title -- Copyright -- CONTENTS -- IT'S A DISASTER! -- THE ORIGINS OF EARTHQUAKES -- WAVES OF ENERGY -- SEISMOGRAPHS AND SEISMOGRAMS -- THE DEADLY DAMAGE -- EMERGENCY EARTHQUAKE RESPONSE -- EARTHQUAKE PREPAREDNESS -- ENGINEERING FOR EARTHQUAKES -- EARTHQUAKE SAFETY TIPS -- GLOSSARY -- INDEX -- WEBSITES -- Back Cover

Cover -- Title Page -- Copyright -- Contents -- The First Constitution -- The Constitutional Convention -- Ratification -- We the People -- The Legislative Branch -- The Executive Branch -- The Judicial Branch -- States' Rights and Amendments -- The Bill of Rights -- More Amendments -- Always at Work -- Glossary -- For More Information -- Index -- Back Cover