The main cause of the Dust Bowl in the 1930s was poor soil and land management. The combination of extensive plowing of grasslands for agriculture, coupled with prolonged drought and high winds, led to soil erosion and the creation of massive dust storms. Unsustainable farming practices, such as over-plowing and lack of proper crop rotation, significantly contributed to the problem.
What was the main cause of the Dust Bowl in the 1930s?
poor soil and land management
unusually cold weather
stronger than normal storms
flooding caused by climate change
7 answers
A student writes two statements about the importance of soil.
1. Soil can act as a filter and keep pollutants out of groundwater.
2. Soil can be used as a natural building material.
Which of these describes whether the statements correctly describe the importance of soil?
Neither Statement 1 nor 2 correctly describes the importance of soil.
Both Statements 1 and 2 correctly describe the importance of soil.
Only Statement 2 correctly describes an importance of soil.
Only Statement 1 correctly describes an importance of soil.
1. Soil can act as a filter and keep pollutants out of groundwater.
2. Soil can be used as a natural building material.
Which of these describes whether the statements correctly describe the importance of soil?
Neither Statement 1 nor 2 correctly describes the importance of soil.
Both Statements 1 and 2 correctly describe the importance of soil.
Only Statement 2 correctly describes an importance of soil.
Only Statement 1 correctly describes an importance of soil.
Both Statements 1 and 2 correctly describe the importance of soil.
Statement 1 highlights the role of soil in filtering pollutants and protecting groundwater, which is an important ecological function. Statement 2 points out that soil can be used as a natural building material, which is also true and reflects its significance in construction and architecture.
A student makes a list of all the soil layers in a temperate region. Which layer would be located farthest from the surface of the Earth?
bedrock (R)
organic layer (O)
parent material (C)
topsoil (A)
bedrock (R)
organic layer (O)
parent material (C)
topsoil (A)
The layer located farthest from the surface of the Earth would be bedrock (R).
In the soil profile, the layers from the surface downward typically include:
- Organic layer (O) - top layer with organic matter
- Topsoil (A) - layer rich in nutrients and organic material
- Parent material (C) - the layer from which the soil develops, made of weathered rock and minerals
- Bedrock (R) - the solid rock layer beneath the soil that is the source of the parent material.
So, bedrock is the deepest layer in this context.
Why is soil considered to be a nonrenewable natural resource?
It is easily transported.
It uses a lot of Earth’s energy.
It takes so long to form.
It can never be replaced.
It is easily transported.
It uses a lot of Earth’s energy.
It takes so long to form.
It can never be replaced.
Soil is considered to be a nonrenewable natural resource primarily because it takes so long to form.
Soil development is a slow process, typically taking hundreds to thousands of years to form just a few inches of topsoil through the weathering of rock and the decomposition of organic matter. Once soil is lost through erosion or other means, it cannot be easily replenished on a human timescale, making it a resource that is not renewable in the same way that other natural resources might be.