AP BIOLOGY

Detailed explanation-1: -Of all the water that exists on our planet, roughly 97% is saltwater and less than 3% is freshwater. Most of Earth’s freshwater is frozen in glaciers, ice caps, or is deep underground in aquifers.

Detailed explanation-2: -Those ice sheets, which cover most of Greenland and Antarctica, only contain 2% of the world’s total water supply, but a whopping 70% of the Earth’s fresh water.

Detailed explanation-3: -The oceans constitute 97.3% of all water sources on the Earth. Thus, the percentage of freshwater sources is only 2.7%.

Detailed explanation-4: -Most of Earth’s fresh water is locked in ice Over 96% of Earth’s water is saline (salty) and found in the ocean. Only a little over 3% of Earth’s water is fresh. Most of that fresh water (68.7%) is frozen in glaciers and ice caps.

Detailed explanation-5: -Fresh water makes up under 3% of all water on earth, and nearly 65% of this drinkable water is tied up in glaciers. Rivers, streams, lakes, and dams that hold freshwater contain 1% of potable water while groundwater accounts for 0.3%. Q. What percentage of water is available as fresh water on the surface of the earth?