Biologists divide living things into groups called kingdoms. This book looks at animals: the life-forms that make up the animal kingdom. Animals vary in body structure, feeding habits, reproduction, and behavior. But all are multi-cellular organisms. All have to eat to get energy, and most have a nervous system that allows them to respond to challenges in their environment.
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.