We share the planet with millions of plants and animals. Sometimes human behavior can harm them. This book introduces readers to the plants and animals that are now classified as threatened, endangered, and extinct. Readers will learn about the threats and dangers these species face or once faced and the consequences that follow. Important concepts such as conservation and protection are explored in this volume, which will help readers understand people's role in helping threatened and endangered species. Age-appropriate text and colorful photographs make this high-interest topic accessible for young readers.