Question

1. shelter belts prevent topsoil loss because ______

○ trees act as windbreaks
○ they conform to the shape of hills
○ strips are plowed on land
○ tree roots hold soil

Explanation:

Shelter belts are rows of trees/shrubs planted to protect areas from wind erosion. They function as windbreaks, reducing wind speed at ground level which prevents topsoil from being blown away. The other options describe different soil conservation methods: tree roots holding soil is related to general tree soil retention, plowed strips on land refers to contour strip cropping, and conforming to hill shapes is contour plowing.

Answer:

trees act as windbreaks