Soil Quiz

Soil formation begins with the weathering of

Soil that is rich in humus has high

When earthworms add their wastes to the soil, then die and decay in the soil, they are contributing to the formation of

Living organisms in soil help to

Decomposers are the soil organisms that

Soil is a valuable resource because it

What can cause the loss of soil that is not protected by plant cover?

Most of the work of mixing humus within the soil is done by

A permeable rock weathers easily because it

In which soil layer would you find loam that is rich in humus

The texture, or particle size, of soil determines

The type of soil called loam is made up of

In a cross section of soil, the B horizon consists of