Soil profile

What is a vertical cross section of the soil?

• soil erosion

• soil texture

• soil profile

• soil structure

What is the primary factor in determining the color of subsoils?

• humus

• level of earthworm activity

• the percentage of sand

• type of plant growth

What is the uppermost layer of soil consisting of an organic layer made up of partially decayed plant and animal debris?

• A

• B

• O

• R

Which horizon provides the best environment for the growth of plant roots, microorganisms and other life?

• O

• A

• C

• R

Tags

NGSS.MS-LS1-5

Which layer of soil is on bottom?

• topsoil

• subsoil

• bedrock

• horizon C

Which layer of soil has low organic material ?

• bedrock

• topsoil

• subsoil

Which horizon is known as subsoil?

• Horizon A

• Horizon B

• Horizon C

• Horizon R

Layers of soil are also known as

• soil profile

• soil horizon

• soil sheets

• soil cores

The horizon contains partly weathered rock

• B

• R

• A

• C

Tags

NGSS.MS-ESS2-1

Which layer is the parent material?

• A

• B

• R

• C