Final answer:
Farming is the largest cause of soil erosion, while clear-cut logging, overgrazing, and off-road vehicle use also contribute.
Step-by-step explanation:
The largest cause of soil erosion is farming. While other factors such as clear-cut logging, overgrazing, and off-road vehicle use do contribute to soil erosion, farming has the greatest impact. Through activities like plowing and intensive cultivation, farming practices disturb the integrity of the soil, making it more susceptible to erosion.
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