SOIL HORIZONS REVIEW

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

MIXTURE OF ROCK, MINERAL PARTICLES, AND ORGANIC MATTER...... 

• HORIZONS
• HUMUS
• SOIL
• CLAY

RICH IN MINERALS, SUCH AS IRON AND ALUMINUM.......

• O
• A
• B
• D

SLIGHTLY BROKEN UP ROCK.....

• C
• D
• O
• A

LOOSE SOIL THAT IS RICH IN ORGANIC MATERIAL...EX. HUMUS.......

• O
• A
• B
• C

WHAT IS HORIZON D ALSO CALLED.......

• HUMUS
• BEDROCK
• ORGANIC MATTER
• INORGANIC MATTER

MORE MATURE SOIL HAS MORE HORIZONS......

• FALSE
• TRUE

WHAT LAYER IS TOPSOIL FOUND IN........

• A
• B
• C
• D