Types of soil: sand, silt, clay

THE ground or soil you walk on is made up of tiny rock particles that have been ground down by the wind, rain, sun, animals, snow and glaciers for thousands of years. These particles contain minerals that dissolve in water and so provide nutrients for plants.

There are also living and dead things (organic material) in soil. When plants or animals die, living organisms such as worms, fungus and bacteria eat the remains. What’s left after these organisms