Question

A region experiences frequent landslides from heavy rains. How can the local residents lower the frequency of landslides in the region?

Option 1: Start contour plowing soil in valleys that are impacted by landslides.
Option 2: Plant vegetation on the slopes that experience landslides.
Option 3: Encourage deforestation in the regions that haven’t suffered landslides.
Option 4: Divert water so it flows into the affected region.

Answer 1

The local residents can lower the frequency of landslides by contour plowing soil in valleys, planting vegetation on slopes, and diverting water into the affected region.

Step-by-step explanation:

To lower the frequency of landslides in a region that experiences frequent landslides from heavy rains, there are several measures that can be taken:

1. Option 1: Contour plowing soil in valleys that are impacted by landslides can help to reduce the potential for landslides. Contour plowing involves plowing along the natural contours of the land instead of up and down the slope, which helps to slow down and redirect the flow of water, reducing erosion and landslide risk.
2. Option 2: Planting vegetation on the slopes that experience landslides can be effective in stabilizing the soil. Tree roots help hold hillsides together and therefore help prevent landslides. Vegetation also helps to absorb water and reduce runoff, which can help to reduce the saturation of slopes.
3. Option 4: Diverting water so it flows into the affected region can be a solution if the landslide is caused by an excessive accumulation of water. However, this option should be carefully planned and implemented to ensure it does not have negative consequences elsewhere.