Starting with the prehistoric life and evolution, this comprehensive book looks at everything from underwater life to land mammals and their close relatives humans. Discover the first signs of life in the Prehistoric Life chapter and learn about animal species found in water, on land and in the air throughout the rest of the book. From the smallest insect to the biggest birds in the sky, children will learn about what makes each species unique. A giant animal encyclopedia for Key Stage 2 science, history and geography help. Ideal as an aid for science homework.