What do you call the process of erosion due to the action of snow?

Correct option is A

The correct answer is (a)Nivation.

• Nivation refers to the process of erosion caused by the action of snow.
• It involves the combination of snow, ice, and meltwater, which can erode the ground beneath and around the snow patch, typically in mountain regions.
• This process is particularly active in regions that experience persistent snow cover, such as polar and high-altitude areas.
• Nivation can contribute to the formation of features like cirques (bowl-shaped depressions in mountains).

Information about the other Options:

• Moraine-formation: This is a process related to glaciers, where debris like rocks and soil are carried along by the moving ice and eventually deposited. It's not specifically caused by the action of snow.
• Bio-erosion: This involves the erosion of rocks and surfaces due to biological activities, such as the actions of plants, animals, or microbes.
• Sedimentation: This is the process of deposition of materials (like sand, silt, etc.) carried by wind, water, or ice, not directly related to the erosion caused by snow.