Explore an oak tree, from its leafy crown to its roots underground, and learn all the amazing ways it supports the animals, plants, and habitat where it lives in this surprising and enlightening nonfiction picture book companion to the award-winning Fungi Grow. An oak tree is so much more than meets the eye. From tiny fungi to mighty mammals, this amazing tree contains a whole world. For insects and birds, the oak's leaves, branches, and bark are a home. For bears and squirrels, the thousands of acorns the oak produces are a nutritious superfood. Owls, deer, foxes, and many more creatures are drawn to the rich and healthy environment an oak creates. Because of a single oak tree, its many neighbors flourish.