Question: Information: - A continent is one of several very large landmasses on Earth. Generally identified by convention rather than any strict criteria, up to seven regions are commonly regarded as continents. Ordered from largest in size to smallest, they are: Asia, Africa, North America, South America, Antarctica, Europe, and Australia. In geology, areas of continental crust include regions covered with water. - The Antarctic (US English , UK English or and or ) is a polar region, specifically the region around the Earth's South Pole, opposite the Arctic region around the North Pole. The Antarctic comprises in the strict sense the continent of Antarctica and the island territories located on the Antarctic Plate. In a broader sense the Antarctic region include the ice shelves, waters, and island territories in the Southern Ocean situated south of the Antarctic Convergence, a zone approximately wide varying in latitude seasonally. The region covers some 20% of the Southern Hemisphere, of which 5.5% (14 million km) is the surface area of the Antarctic continent itself. All of the land and ice shelves south of 60S latitude are administrated under the Antarctic Treaty System. In a biogeographic sense, the Antarctic ecozone is one of eight ecozones of the Earth's land surface. - The Antarctic Peninsula is the northernmost part of the mainland of Antarctica, located at the base of the Southern Hemisphere. At the surface, it is the biggest, most prominent peninsula in Antarctica as it extends from a line between Cape Adams (Weddell Sea) and a point on the mainland south of Eklund Islands. Beneath the ice sheet which covers it, the Antarctic Peninsula consists of a string of bedrock islands; these are separated by deep channels whose bottoms lie at depths considerably below current sea level. They are joined together by a grounded ice sheet. Tierra del Fuego, the southernmost tip of South America, lies only about away across the Drake Passage. - The Southern Ocean, also known as the Antarctic Ocean or the Austral Ocean, comprises the southernmost waters of the World Ocean, generally taken to be south of 60S latitude and encircling Antarctica. As such, it is regarded as the fourth-largest of the five principal oceanic divisions: smaller than the Pacific, Atlantic, and Indian Oceans but larger than the Arctic Ocean. This ocean zone is where cold, northward flowing waters from the Antarctic mix with warmer subantarctic waters. - The East Antarctic Ice Sheet ( EAIS ) is one of two large ice sheets in Antarctica , and the largest on the entire planet . The EAIS lies between 45 west and 168 east longitudinally . The EAIS is considerably larger in area and mass than the West Antarctic Ice Sheet ( WAIS ) . It is separated from the WAIS by the Transantarctic Mountains . The EAIS rests upon a large land mass , contrary to that of the WAIS , which rests mainly on bedrock below sea level . The EAIS is also home to the thickest ice on the frozen white continent , at 15,700 ft ( 4,800 m ) . More well known , however , is that the EAIS is home to the geographic South Pole as well as of the Amundsen - Scott South Pole Station . - Australia, officially the Commonwealth of Australia, is a country comprising the mainland of the Australian continent, the island of Tasmania and numerous smaller islands. It is the world's sixth-largest country by total area. The neighbouring countries are Papua New Guinea, Indonesia and East Timor to the north; the Solomon Islands and Vanuatu to the north-east; and New Zealand to the south-east. Australia's capital is Canberra, and its largest urban area is Sydney. - An ice sheet is a mass of glacier ice that covers surrounding terrain and is greater than , thus also known as continental glacier. The only current ice sheets are in Antarctica and Greenland; during the last glacial period at Last Glacial Maximum (LGM) the Laurentide ice sheet covered much of North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South America. - Ice is water frozen into a solid state. Depending on the presence of impurities such as particles of soil or bubbles of air, it can appear transparent or a more or less opaque bluish-white color. - The Southern Hemisphere is the half sphere of Earth which is south of the equator. It contains all or parts of five continents (Antarctica, Australia, about 90% of South America, the southern third of Africa, and several southern islands off the continental mainland of Asia), four oceans (Indian, South Atlantic, Southern, and South Pacific) and most of the Pacific Islands in Oceania. Its surface is 80.9% water, compared with 60.7% water in the case of the Northern Hemisphere, and it contains 32.7% of Earth's land. - Antarctica (US English , UK English or ) is Earth's southernmost continent. It contains the geographic South Pole and is situated in the Antarctic region of the Southern Hemisphere, almost entirely south of the Antarctic Circle, and is surrounded by the Southern Ocean. At , it is the fifth-largest continent. For comparison, Antarctica is nearly twice the size of Australia. About 98% of Antarctica is covered by ice that averages in thickness, which extends to all but the northernmost reaches of the Antarctic Peninsula. - Earth, otherwise known as the world, is the third planet from the Sun and the only object in the Universe known to harbor life. It is the densest planet in the Solar System and the largest of the four terrestrial planets. - The South Pole, also known as the Geographic South Pole or Terrestrial South Pole, is one of the two points where the Earth's axis of rotation intersects its surface. It is the southernmost point on the surface of the Earth and lies on the opposite side of the Earth from the North Pole. Given the information above, choose from the list below the object entity that exhibits the relation 'instance of' with the subject 'east antarctic ice sheet'. Choices: - antarctic treaty system - area - base - cape - comparison - continent - convention - country - eight - five - glacier - harbor - ice sheet - ocean - part - peninsula - planet - point - pole - principal - region - sense - seven - side - size - sphere - state - surface - system - treaty - water
Answer:
glacier