What two factors, when increased and decreased, result in higher erosion rates?

The correct answer highlights the relationship between the changes in two specific factors that influence soil erosion rates. When one factor increases, while the other decreases, it creates conditions that heighten the risk of erosion.

In this context, increasing the intensity of rainfall or the amount of rainfall can lead to greater water runoff. When this water moves across the soil surface, it has the potential to dislodge soil particles, which contributes to erosion. Additionally, decreasing plant cover or vegetation can exacerbate this situation. Vegetation plays a crucial role in protecting the soil from the impact of raindrops and reducing the speed of surface water flow, thereby minimizing soil movement.

Consequently, with increased rainfall and decreased vegetation cover, soil becomes more vulnerable, resulting in higher erosion rates. This dynamic underscores the importance of understanding the interplay between various environmental factors and their cumulative impact on soil conservation efforts.