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The frigid zones are the coldest regions of Earth and are generally covered in ice and snow. It receives slanting rays of the Sun, as this region lies farthest from the equator. Summer in this region lasts for about 2 to 3 months, and there is almost 24-hour sunlight during summer.
In geography, regions, otherwise referred to as areas, zones, lands or territories, are portions of the Earth's surface that are broadly divided by physical characteristics (physical geography), human impact characteristics (human geography), and the interaction of humanity and the environment (environmental geography).
The landforms of Earth are generally divided into physiographic regions, consisting of physiographic provinces, which in turn consist of physiographic sections, [1] [2] [3] though some others use different terminology, such as realms, regions and subregions. [4] Some areas have further categorized their respective areas into more detailed ...
Physiographic regions are a means of defining Earth's landforms into independently distinct, mutually exclusive areas, independent of political boundaries. It is based upon the classic three-tiered approach by Nevin M. Fenneman in 1916, that separates landforms into physiographic divisions, physiographic provinces , and physiographic sections.
Under this scheme, most of the island countries and territories in the Pacific Ocean are grouped together with the continent of Australia to form the geographical region of Oceania. [2] In geology, a continent is defined as "one of Earth's major landmasses, including both dry land and continental shelves". [3]
Antarctica is the only continental region which does not comprise any geographical subregions or country-level areas. The UNSD geoscheme does not set a standard for the entire United Nations System , and it often differs from geographical definitions used by the autonomous United Nations specialized agencies for their own organizational ...
Generally speaking, only a few regions of the dry-land part of the Earth are so remote or have such a harsh climate that no one uses those areas for even part of the year. These places are tiny islands, the driest part of large deserts, very high mountains, and ice caps.
The land hemisphere and water hemisphere are the hemispheres of Earth containing the largest possible total areas of land and ocean, respectively. By definition (assuming that the entire surface can be classified as either "land" or "ocean"), the two hemispheres do not overlap. Determinations of the hemispheres vary slightly.