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What is soil exhaustion?
C horizon
topsoil
A horizon
a type of soil with almost equal parts of sand, silt, and clay - it's the ideal soil
when the soil is no longer fertile
to prevent soil exhaustion
the organic remains of plants and animals
carbonic acid
Where does humus come from?
C horizon
topsoil
A horizon
a type of soil with almost equal parts of sand, silt, and clay - it's the ideal soil
when the soil is no longer fertile
to prevent soil exhaustion
the organic remains of plants and animals
carbonic acid
What is another name for the A horizon?
C horizon
topsoil
A horizon
a type of soil with almost equal parts of sand, silt, and clay - it's the ideal soil
when the soil is no longer fertile
to prevent soil exhaustion
the organic remains of plants and animals
carbonic acid
In which soil layer would you expect to find the most humus?
C horizon
topsoil
A horizon
a type of soil with almost equal parts of sand, silt, and clay - it's the ideal soil
when the soil is no longer fertile
to prevent soil exhaustion
the organic remains of plants and animals
carbonic acid
Why do farmers use crop rotation?
C horizon
topsoil
A horizon
a type of soil with almost equal parts of sand, silt, and clay - it's the ideal soil
when the soil is no longer fertile
to prevent soil exhaustion
the organic remains of plants and animals
carbonic acid
What type of weathering is BEST at weathering marble and limestone?
C horizon
topsoil
A horizon
a type of soil with almost equal parts of sand, silt, and clay - it's the ideal soil
when the soil is no longer fertile
to prevent soil exhaustion
the organic remains of plants and animals
carbonic acid
What is loam?
C horizon
topsoil
A horizon
a type of soil with almost equal parts of sand, silt, and clay - it's the ideal soil
when the soil is no longer fertile
to prevent soil exhaustion
the organic remains of plants and animals
carbonic acid
What is the name for the 3rd layer of soil?
C horizon
topsoil
A horizon
a type of soil with almost equal parts of sand, silt, and clay - it's the ideal soil
when the soil is no longer fertile
to prevent soil exhaustion
the organic remains of plants and animals
carbonic acid
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