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If it can take on two real values and all the values between them, the variable is continuous in that interval. [2] If it can take on a value such that there is a non- infinitesimal gap on each side of it containing no values that the variable can take on, then it is discrete around that value. [ 3 ]
22 geographical subregions as defined by the UNSD. Antarctica is not shown.. The United Nations geoscheme is a system which divides 248 countries and territories in the world into six continental regions, 22 geographical subregions, and two intermediary regions. [1]
Major continental divides, showing drainage into the major oceans and seas of the world. Grey areas are endorheic basins that do not drain to the ocean.. A continental divide is a drainage divide on a continent such that the drainage basin on one side of the divide feeds into one ocean or sea, and the basin on the other side either feeds into a different ocean or sea, or else is endorheic, not ...
The supercontinent Columbia or Nuna formed during a period of 2.0–1.8 billion years ago and broke up about 1.5–1.3 billion years ago. [ 124 ] [ 125 ] The supercontinent Rodinia is thought to have formed about 1 billion years ago and to have embodied most or all of Earth's continents, and broken up into eight continents around 600 million ...
This is a list of countries with territory that straddles more than one continent, known as transcontinental states or intercontinental states. [1]Contiguous transcontinental countries are states that have one continuous or immediately-adjacent piece of territory that spans a continental boundary, most commonly the line that separates Asia and Europe.
The Mediterranean Sea, between Africa and Europe The Atlantic Ocean around the plate boundaries (text is in Finnish). The African and European mainlands are non-contiguous, and the delineation between these continents is thus merely a question of which islands are to be associated with which continent.
The thickness of Earth's crust (km). The continental crust consists of various layers, with a bulk composition that is intermediate (SiO 2 wt% = 60.6). [5] The average density of the continental crust is about, 2.83 g/cm 3 (0.102 lb/cu in), [6] less dense than the ultramafic material that makes up the mantle, which has a density of around 3.3 g/cm 3 (0.12 lb/cu in).
For example, the ratio in the United States was 3.36 in 2015, and 3.53 in 2016. [ 16 ] [ a ] Though age-standardization is common statistical process to categorize mortality data for comparing purposes, this approach by WHO is based on estimates which take into account issues such as under-reporting, resulting in rates differing from the ...