This map shows the use of Key Markup Language to create a thematic chloropleth map on Google Earth. This thematic map visually represents the relative infant mortality rate in different countries. The higher the rate, the more the country stands out from the base level, the ocean. Chloropleth maps show information about data superimposed on a base surface, just as dot distribution maps do, but these maps do not have to show distribution as precisely. This one, for example, has a large scale, and sets the boundaries for the division on countries, rather than showing dots to show distribution over the larger area.
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