GEOLOGY

Detailed explanation-1: -Almost all of it is locked up in ice and in the ground. Only a little more than 1.2% of all freshwater is surface water, which serves most of life’s needs.

Detailed explanation-2: -Of total freshwater, over 68 percent is locked up in ice and glaciers. Another 30 percent of freshwater is in the ground.

Detailed explanation-3: -Fresh water is found in glaciers, lakes, reservoirs, ponds, rivers, streams, wetlands and even groundwater. These freshwater habitats are less than 1% of the world’s total surface area yet house 10% of all known animals and up to 40% of all known fish species.

Detailed explanation-4: -more than one trillion (1012) gallons or 3.785 trillion liters, making the total amount of water available about 326 quintillion gallons or 1233.91 quintillion liters.