Trees are more than just a feature of our natural landscape - they are essential to life on earth. They provide shade, shelter and food for wildlife, they clean the air and their roots stabilize the earth. Trees takes a closer look at some of these ancient plants, from the common oak to the dragon blood tree. In this book, you will discover how trees work, explore the affect of seasons on certain trees and examine a variety of amazing and unique trees from around the world. You can build your own encyclopedia with Ladybird Books.