Answer:
A. Increasing the use of fertilizers and irrigation
Explanation:
That will help the land and make it more farmable.
Each rectangle is (18cm)(10cm)=180 square cm.
180 square cm/45 square cm=4. she cuts four triangles from each rectangle
(4 patches/rectangle)(32 rectangles)=128 patches
Answer=128 patches
Valley glaciers are formed when a glacier travels across and down a slope, carving the valley by the action of scouring.