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In which soil layer would you expect to find the most humus?
topsoil
iron
to prevent soil exhaustion
A horizon
B horizon
A horizon
when the soil is no longer fertile
The dead material retains moisture, adds nutrients, and prevents erosion.
What is the name for the top layer of soil?
topsoil
iron
to prevent soil exhaustion
A horizon
B horizon
A horizon
when the soil is no longer fertile
The dead material retains moisture, adds nutrients, and prevents erosion.
Rust forms from the oxidation of what metal?
topsoil
iron
to prevent soil exhaustion
A horizon
B horizon
A horizon
when the soil is no longer fertile
The dead material retains moisture, adds nutrients, and prevents erosion.
Why do farmers use crop rotation?
topsoil
iron
to prevent soil exhaustion
A horizon
B horizon
A horizon
when the soil is no longer fertile
The dead material retains moisture, adds nutrients, and prevents erosion.
What is soil exhaustion?
topsoil
iron
to prevent soil exhaustion
A horizon
B horizon
A horizon
when the soil is no longer fertile
The dead material retains moisture, adds nutrients, and prevents erosion.
Why do farmers leave the weeds and stalks of the previous year's crop in the ground during conservation plowing?
topsoil
iron
to prevent soil exhaustion
A horizon
B horizon
A horizon
when the soil is no longer fertile
The dead material retains moisture, adds nutrients, and prevents erosion.
What is another name for the A horizon?
topsoil
iron
to prevent soil exhaustion
A horizon
B horizon
A horizon
when the soil is no longer fertile
The dead material retains moisture, adds nutrients, and prevents erosion.
What is the name for the 2nd layer of soil?
topsoil
iron
to prevent soil exhaustion
A horizon
B horizon
A horizon
when the soil is no longer fertile
The dead material retains moisture, adds nutrients, and prevents erosion.
Check it!