Answer:
One way that glaciers change the landscape is by erosion. As they pass over the ground, the ice scrapes up soil and rock. A valley glacier will leave a valley much deeper, as it erodes the underlying surface with plucking and abrasion.
Water is needed to irrigate crops; for drinking, sanitation, and transportation; and also to produce electricity. Many countries in this region are located along swiftly moving rivers. They are able to harness this water to generate electricity. Rivers running down mountains are dammed to produce hydroelectric power.
