Soils

Front

What is the layer of soil just below the topsoil?

Back

subsoil

Front

Which layer of soil are these roots growing in?

Back

topsoil

Front

When plants, animals, and other organisms die, they break down and become part of the soil. What is this part of the soil called? Options: sand, silt, clay, humus

Back

humus

Front

What is the layer of soil that contains humus, leaf litter, and other organic matter? Options: O - Organic, A - Topsoil, B - Subsoil, R - Bedrock

Back

O - Organic

Front

Which layer is the bottom of the soil profile?

Back

Bedrock

Front

Layers of soil are also known as:

Back

Soil Horizons

Front

Which layer of the soil profile contains the MOST humus? Options: Layer 1 (A), Layer 2 (B), Layer 3 (C), Layer 4 (R)

Back

Layer 1 (A)

Front

Which layer of the soil profile contains a solid layer of rock? Options: Layer 1 (A), Layer 2 (B), Layer 3 (C), Layer 4 (R)

Back

Layer 4 (R)

Front

Which soil layer consists of clay, iron oxides, and other components that came from the zone of leaching?

Back

B Horizon

Front

What is soil made of?

Back

weathered rocks and minerals, dead plants and animals, air and water