Multiple Choice
Why are soils in tropical rain forests not well suited for intensive farming?
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35. Soil
Soil and Nutrients
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The American Dust Bowl of the 1930s resulted from __________.
A
high aluminum toxicity
B
the leaching of nutrients from the soil
C
subsidence caused by overpumping of aquifers for irrigation
D
salinization caused by poor irrigation practices
E
the removal of the native grasses that held the soil in place and planting of agricultural crops
Verified step by step guidance1
Understand the context of the American Dust Bowl: It was a period of severe dust storms during the 1930s that greatly damaged the ecology and agriculture of the American and Canadian prairies.
Identify the key factors that contributed to the Dust Bowl: The removal of native grasses and the planting of agricultural crops disrupted the natural ecosystem.
Native grasses played a crucial role in holding the soil in place with their extensive root systems, preventing erosion.
When these grasses were removed for agricultural purposes, the soil became loose and susceptible to wind erosion, leading to the dust storms.
Recognize that the Dust Bowl was not primarily caused by high aluminum toxicity, nutrient leaching, subsidence from overpumping, or salinization, but rather by the removal of native vegetation.
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