Answer:
Two processes by wich glaciers erode the land are plucking and abrasion.
Step-by-step explanation:
The study of plucking and abrasion arises because of the old environmental disasters caused by climate change.
Plucking and abrasion are the terms used in geology for erosion that arise from glacier movement (where it occurs slowly) or from large floods (where it occurs rapidly).
The term plucking means the movement of two large pieces of rock. While abrasion is similar to the effect that sandpaper produces from the rocky debris that mop the earth.
These movements are caused because when the glaciers move due to the thaw and freezing, they remove pieces of stone from the ground.
Although there are other ways in which this phenomenon can occur, the main cause is the movement of glaciers.