• A glacier is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries.

Causes:

• A glacier is a big chunk of ice that is created from falling and accumulated snow over a period of time. They get created in areas where the temperatures are exceedingly low; these include areas that are at sea level and mostly in high altitude areas like the mountain tops.