Soil Horizons

Which is not found in the O horizon?

• dead leaves

• fallen trees

• sticks

• grass

The A horizon contains _____________.

What is humus?

• a decomposer

• dark organic matter that forms in soil when plant and animal parts decay

• the stuff you get from the store to eat

• light matter that contains the grass

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Does all soil contain a Horizon E?

• Yes

• No

• I wasn't paying attention

• What is that

Which horizon does clay collect?

• A

• B

• E

• O

Which layer contains parent material?

• A

• B

• E

• C

Horizon R contains bedrock, what does bedrock form?

• humus

• decomposers

• subsoil

• parent material