Water makes up about 71% of the Earth's surface, while the other 29% consists of continents and islands. 96% of all Earth's water is contained within the oceans as salt water, while the remaining 4% is fresh water located in lakes, rivers, glaciers, and the polar ice caps.
a. If the total volume of the Earth is 1,386,000,000 km3, the volume of salt water is ? km3.
b. If the total volume of the Earth is 1,386,000,000km3, the volume of fresh water is ? km3.