35. Soil
Soil and Nutrients
Multiple Choice
Multiple ChoiceThe 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
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