A look at evolution on the African savannah describes how the acacia bush, in danger of having its leaves ravaged by animals, began to produce thorns that protect it and create a beautiful sound when the wind blows.
- ISBN: 9780590472999
- Author: Cowcher, Helen
- Published: 1993, Scholastic Trade
- Themes: evolution, Plants, savannah
- Descriptors: Africa, Early Years (ages 2-6), Nonfiction