Soil

Soil the upper layer of Earth’s surface.

There are three main types of soil which are sand, silt and clay.  Sand has the largest particle found in soil. Silt has the medium particle found in soil.  Clay has the smallest particle found in soil.

Soil is formed by many factors, including living organisms and plants, fungi, and lots more.

Humus is made up of decayed plants and animals.  Topsoil is the top layer on the five layers of soil.  Subsoil is the second layer on Earth’s surface.  Parent material is the soil layer just above bedrock.  Bedrock is just solid rock with tiny cracks and it is also the bottom layer of soil.

Soil plays an important role in supporting life on Earth.

Written by Grayson