How does deforestation by fire or human activity contribute to mass wasting?
◦ It allows the wind to blow across the slopes, imparting a stress that triggers landslides.
◦ It allows excess rainfall runoff to erode the landscape, triggering mass wasting.
◦ It kills tree roots that help hold the slopes in place, allowing mass movement.
◦ It allows farming activity that exposes soil to erosion and mass wasting.