The Secret World in Soil Keyword: SOIL

A half teaspoon of soil contains millions of bacteria and other tiny organisms.

Ask the Answer Worm!

S.K. Worm answers all your questions about soil. Learn how soil is formed, what it contains, and why it is useful. Earn your soil diploma!

		Questions How long can it take for one inch of soil to form? Why is soil important for plants?

Soil Science Education Home Page

This site features loads of soil information. View the Soil of the Month profile, read soil poems, and learn to make soil models.

		Questions How many different varieties of soil are there in the United States? List four factors that affect soil formation. Why is soil necessary to all life?

Underground Adventure

Explore the amazing world that exists in soil. Visit the virtual terrarium. Create your own field site to study!