Biological diversity is part of what makes Earth special. Some animals are far larger than humans, while others are quite small. However, even animals of the same class can vary greatly in size. This set highlights some of the largest or heaviest animals of Earth, including the largest members of the classes Mammalia, Insecta, and Aves. Manageable texts and vivid photographs of African elephants, Chinese salamanders, and ostriches help readers understand why these animals are so important. This exciting approach to life science is sure to enrapture readers. Features include: Correlates with the life science standards of the Next Generation Science Standards. Emphasizes the diversity of living things in various habitats. Full-color photographs give context to each narrative.