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From TOP to BOTTOM, what are the horizons of the soil?
decomposers
all of these
thousands of years
topsoil, subsoil, bedrock
The Great Dust Bowl
topsoil with alot of dark humus
all of these
destructive
Weathering and Erosion are what type of forces that change the earth's surface?
decomposers
all of these
thousands of years
topsoil, subsoil, bedrock
The Great Dust Bowl
topsoil with alot of dark humus
all of these
destructive
Oragnisms like earthworms and bacteria that break down the remains of organisms and recycle soil are BEST known as:
decomposers
all of these
thousands of years
topsoil, subsoil, bedrock
The Great Dust Bowl
topsoil with alot of dark humus
all of these
destructive
Which of the following are ways to CONSERVE soil and prevent erosion?
decomposers
all of these
thousands of years
topsoil, subsoil, bedrock
The Great Dust Bowl
topsoil with alot of dark humus
all of these
destructive
Which layer of soil would be the most FERTILE?
decomposers
all of these
thousands of years
topsoil, subsoil, bedrock
The Great Dust Bowl
topsoil with alot of dark humus
all of these
destructive
Which historical event happened because good soil conservation methods were not being used?
decomposers
all of these
thousands of years
topsoil, subsoil, bedrock
The Great Dust Bowl
topsoil with alot of dark humus
all of these
destructive
Which of the following have a negative (bad) impact on the quailty of soil in our environment?
decomposers
all of these
thousands of years
topsoil, subsoil, bedrock
The Great Dust Bowl
topsoil with alot of dark humus
all of these
destructive
How many years would it take for the Colorado River to weather and erode the Grand Canyon?
decomposers
all of these
thousands of years
topsoil, subsoil, bedrock
The Great Dust Bowl
topsoil with alot of dark humus
all of these
destructive
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