It is a solid layer of rock beneath the soil.

The decayed organic material in soil which is a dark-colored substance that forms as plant and animal decay.

The composition of soil includes the following;

The particles of rock in soil classified by size as

Is a measure of how well the soil support the plant growth.

Soil that is rich in humus has high fertility.

Soil that has reduced humus has high fertility.

The type of soil in which plants can grow best is;

Soil that is made up of about equal part of clay, sand and silt is called_____________________________

It measures the acidity of soil.

Most garden plant grow best at which pH level?

The process of soil formation happens when;

Is a layer of soil that differs in color, texture and composition from the layer above or below it.

Soil Horizons includes;

This horizon forms as bedrock begins to weather or the rocks breaks up into small pieces.

This horizon is made up of topsoil, a crumble dark brown soil that is a mixture of humus, clay and other minerals.

It is often called as subsoil, usually consist of clay and other particles of rocks but little humus.

How do living things affect the soil?

They are the organisms that breaks the remains of dead organisms into smaller pieces and digest them with chemicals.

The following are examples of decomposers