Question

Why are glaciers called permanent rivers of ice eventhough they melt in the summer season or they move forward and melt and form rivers for example Ganges ?

Answer 1

A glacier is called a permanent river of ice because it is a persistent body of dense ice that is constantly moving under its own weight. Some part of the glacier melts during the summer but the entire glacier does not melt. A glacier eventually becomes a river in the lower reaches of mountains but in the the upper reaches, the glacier remains.