Answer :
In terms of freshwater storage, groundwater is second only to the glacier.
What is glacier?
Glaciers is a slowly moving mass of ice. Glaciers form on land where the snow that has fallen over the centuries has compressed into ice. Gravity will slowly move you down.
Most of the world's glaciers are located in polar regions such as Greenland, the Canadian Arctic and Antarctica. Glaciers are also found near the equator in some mountainous regions. The Andes Mountains of South America contain some of the largest tropical glaciers in the world. About 2% of all water on earth is frozen in glaciers.
Glaciers can range in age from hundreds to thousands of years. Most of today's glaciers are remnants of huge ice sheets that covered the Earth during the Ice Age. The Ice Age ended over 10,000 years ago. Earth's history has had colder periods when glaciers formed and warmer periods when glaciers melted.
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