The Importance of Fresh Water

The video explains that over 70% of Earth's surface is covered with water, mostly saltwater in oceans. Only 2.8% is freshwater, with over half frozen in glaciers. A small fraction is underground, and the rest is in lakes and rivers. A visual analogy using cups illustrates the scarcity of readily available freshwater.

Where is most of the Earth's freshwater found?

How much freshwater is readily available to humans compared to the total amount of water on Earth?