4A SOIL

Which horizon is know as the subsoil?

• R

• C

• B

• A

Which horizon contains bedrock?

• R

• C

• B

• A

Which horizon contains topsoil and organisms?

• R

• C

• B

• A

Which horizon is between A and B horizons?

• R

• C

• E

• O

Which horizon contains organic matter?

• R

• O

• E

• B

Soil horizon is horizontal. Soil profile is vertical?

• true

• false

SOIL LAYERS ARE CALLED.......

• MATERIALS
• ORGANIC
• HUMUS
• HORIZONS

THIS LAYER CONTAINS UNWEATHERED SOLID ROCK AND IS BENEATH ALL OTHER LAYERS......

• HORIZON A
• HORIZON O
• HORIZON D
• HORIZON C

THIS HORIZON IS MADE OF DECAYING LEAVES, TWIGS AND ANIMAL REMAINS/WASTES......

• A
• B
• C
• O

In which layer of the soil profile contains the MOST humus?

• Layer 1

• Layer 2

• Layer 3

• Layer 4