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15 questions
THIS LAYER CONTAINS UNWEATHERED SOLID ROCK AND IS BENEATH ALL OTHER LAYERS......
HORIZON A
HORIZON O
HORIZON R
HORIZON C
Which layer is the parent material?
Horizon O
Horizon A
Horizon B
Horizon C
Horizon R
Which layer is the subsoil?
Horizon O
Horizon A
Horizon B
Horizon C
Horizon R
The horizon that contains partially weathered rock.
C Horizon
A Horizon
B Horizon
Bedrock
Which layer is the topsoil?
Horizon O
Horizon A
Horizon B
Horizon C
Horizon R
Soil is made of:
pieces of rock
air and water
matter that was once alive
all of the above
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