Estimate to the order of magnitude the overall volume of wat

Estimate to the order of magnitude the overall volume of water in the Earth oceans. Provide

explanations.

Clear and complete answer please :)

Solution

Water source Water volume, in cubic miles Water volume, in cubic kilometers Percent of freshwater Percent of total water Oceans, Seas, & Bays 321,000,000 1,338,000,000 -- 96.54 Ice caps, Glaciers, & Permanent Snow 5,773,000 24,064,000 68.7 1.74 Groundwater 5,614,000 23,400,000 -- 1.69     Fresh 2,526,000 10,530,000 30.1   0.76     Saline 3,088,000 12,870,000 --   0.93 Soil Moisture 3,959 16,500 0.05 0.001 Ground Ice & Permafrost 71,970 300,000 0.86 0.022 Lakes 42,320 176,400 -- 0.013     Fresh 21,830 91,000 0.26 0.007     Saline 20,490 85,400 -- 0.006 Atmosphere 3,095 12,900 0.04 0.001 Swamp Water 2,752 11,470 0.03 0.0008 Rivers 509 2,120 0.006 0.0002 Biological Water 269 1,120 0.003 0.0001