How do fish breathe under water? Do all birds fly? Why do some animals have fur? Children will learn the answers to these and other questions as they explore the worlds of mammals, birds, reptiles and... This description may be from another edition of this product.
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.