Water and soil serve as important parts of the natural world, and without them, forests would cease to exist. How do these two essential parts of nature work together to keep animals and plants alive in forests? This elementary science curriculum topic is explained through age-appropriate, accessible text, which highlights the importance of water and soil and how they help maintain the biodiversity of forests. A detailed glossary and informative fact boxes provide readers with more scientific background on these two common parts of ecosystems, and full-color photographs show forest environments in exciting detail.