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In modern mapping, a topographic map or topographic sheet is a type of map characterized by large- scale detail and quantitative representation of relief features, usually using contour lines (connecting points of equal elevation), but historically using a variety of methods. Traditional definitions require a topographic map to show both ...
List of Yahoo!-owned sites and services. Yahoo!, once one of the most popular web sites in the United States, is as of September 2021 a content sub-division of the namesake company Yahoo Inc., owned by Apollo Global Management (90%) and Verizon Communications (10%). It has offered a wide range of online sites and services since its inception in ...
Geology of the United States. Shaded relief map of the United States, showing 10 geological provinces. The richly textured landscape of the United States is a product of the dueling forces of plate tectonics, weathering and erosion. Over the 4.5 billion-year history of the Earth, tectonic upheavals and colliding plates have raised great ...
The term "United States," when used in the geographical sense, refers to the contiguous United States (sometimes referred to as the Lower 48, including the District of Columbia not as a state), Alaska, Hawaii, the five insular territories of Puerto Rico, Northern Mariana Islands, U.S. Virgin Islands, Guam, American Samoa, and minor outlying possessions. [1]
Geologic map of North America. The geology of North America is a subject of regional geology and covers the North American continent, the third-largest in the world. Geologic units and processes are investigated on a large scale to reach a synthesized picture of the geological development of the continent. The divisions of regional geology are ...
This domain is therefore almost exclusively used by American colleges and universities. Some institutions, such as the Exploratorium, that do not meet the current registration criteria have grandfathered domain names. No: Yes: Yes: Yes .gov: U.S. national and state government agencies: Cybersecurity and Infrastructure Security Agency (via Verisign)
Topography is the study of the forms and features of land surfaces. The topography of an area may refer to the land forms and features themselves, or a description or depiction in maps. Topography is a field of geoscience and planetary science and is concerned with local detail in general, including not only relief, but also natural, artificial ...
Map of the United States with state and territory names 1681 map of North America Antebellum map of the United States, published by Sidney E. Morse in An Atlas of the United States (1823), showing the recent acquisition of Missouri and Louisiana, and the remnant of the Northwest Territory after the establishment of Ohio, Indiana and Missouri