AP BIOLOGY

Detailed explanation-1: -Water spends thousands to hundreds of thousands of years in the large ice sheets that cover Antarctica and Greenland. The oldest ice in Antarctica has been there for 2.7 million years.

Detailed explanation-2: -About 2.1% of all of Earth’s water is frozen in glaciers.

Detailed explanation-3: -The polar ice caps are found, clearly, in the polar regions – they start at the extreme poles of our planet and stretch outwards, covering almost the entirety of Antarctica, the Arctic Ocean, the majority of Greenland, a good portion of northern Canada and some of Siberia and Scandinavia.

Detailed explanation-4: -The cryosphere is the frozen water part of the Earth system. This includes frozen parts of the ocean, such as waters surrounding Antarctica and the Arctic.

Detailed explanation-5: -Approximately 69 percent of Earth’s freshwater is locked away in the form of ice in glaciers and polar ice caps, and another 30 percent of Earth’s freshwater is under the surface in the form of groundwater.