AFNR Midterm

Front

Humus is.....

Back

the dead parts of plants and animals in soil.

Front

When there are not enough plants to hold topsoil in place, water and  _______ carry the topsoil away, leaving the subsoil exposed

Back

wind

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?

Back

humus

Front

Which of the following is the largest particle in soil? sand, silt, humus, clay

Back

sand

Front

Which layer of soil are these roots growing in? Options: subsoil, topsoil

Back

topsoil

Front

Wind blowing dirt and sand through the air is an example of...

Back

erosion

Front

Which layer of soil is on the bottom? Options: topsoil, subsoil, bedrock, bottomsoil

Back

bedrock

Front

What is the layer of soil just below the topsoil?

Back

subsoil

Front

Layers of soil are also known as: Soil Profiles, Soil Horizons, Soil sheets, Soil cores

Back

Soil Horizons

Front

What is condensation?

Back

The part of the water cycle when the water vapor in the air gets cold. The water turns back into a liquid and forms clouds.