soils

What is the name of Horizon 1?

• Subsoil 
• Topsoil
• Bedrock 
• Parent Rock

What is the name of Horizon 2?

• Subsoil 
• Topsoil
• Bedrock 
• Parent Rock

Which horizon is made up of partially weathered rocks?

• Horizon A
• Horizon B
• Horizon C
• Horizon D or R

In which horizon is most of the HUMUS?

• Horizon A
• Horizon B
• Horizon C
• Horizon D or R

SOIL LAYERS ARE CALLED.......

• MATERIALS
• ORGANIC
• HUMUS
• HORIZONS

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

Soil is made of

• weathered rocks and minerals
• dead plants and animals
• air and water
• all of the above

Which layer of soil is on the bottom?

• topsoil
• subsoil
• bedrock
• bottomsoil

Breaking down or wearing away of rocks is called....

• weathering
• humus
• erosion