Soil Science

What percent of soil is air?

• 25%

• 45%

• 5%

What percent of soil is water?

• 25%

• 45%

• 5%

What percent of soil is mineral matter?

• 25%

• 45%

• 5%

What percent of soil is organic matter?

• 25%

• 45%

• 5%

Techniques used to try and limit soil erosion is known as _____.

• Soil Survey

• Soil Profile

• Soil Conservation

• Soil Practice

Select all that apply. Erosion can lead to ________.

• Wearing away of land

• Loss of productive soil

• Organic production

• Formation of a loam

What is the grassy layer referring to?

• Organic matter or humus

• Topsoil

• Subsoil

• Parent Material

• Bedrock

What is the O layer referring to?

• Organic matter or humus

• Topsoil

• Subsoil

• Parent Material

• Bedrock

What is the A layer referring to?

• Organic matter or humus

• Topsoil

• Subsoil

• Parent Material

• Bedrock

What is the B horizon referring to?

• Organic Matter or Humus

• Topsoil

• Subsoil

• Parent Material

• Bedrock