Soil- Unit 3

Which explanation should Ricky use to tell why soil is a natural resource?

• Plants grow in soil, and people use plants.

• Plants grow best in soil called loam.

• Soil contains small bits of rock and humus.

• Soil forms through weathering of bedrock.

Look at this picture.

Which type of soil is this family MOST LIKELY using to grow plants?

• humus

• loam

• sand

• silt

Soil has different layers. What is found between topsoil and bedrock?

• humus

• plants

• subsoil

• surface soil

Which type of soil contains the smallest bits of rock

• clay

• sand

• humus

• silt

What would happen if the soil in an environment became MORE fertile?

• Plants would grow better

• There would be more rain.

• The bedrock would get thicker.

• Dead plants would not decompose.