HOW IS SOIL FORMED?

Soil is a mixture of many things.
It forms very slowly over a long period of time.
First, wind, rain and ice wear down rocks into smaller pieces.
Then, the action of animals and plant roots breaks the rocks into even smaller pieces.
Little by little, the pieces of rock mix with the remains of plants or animals.
These remains of living things turn into a dark mixture called humus.
The little pieces of rock mix with the humus to form soil.
There are different types of soils because they are formed from different mixtures of rocks and organic matter.