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Mangroves are various types of trees up to medium height and shrubs that grow in saline coastal sediment habitats in the tropics and subtropics – mainly between latitudes 25° N and 25° S. The remainin ...
Definition
Height above mean sea level (AMSL) is the elevation (on the ground) or altitude of an object, relative to the average sea level datum. AMSL height is used extensively in radio to determine the coverag ...
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The exosphere is a thin, atmosphere-like volume surrounding a planetary body where molecules are gravitationally bound to that body, but where the density is too low for them to behave as a gas by col ...
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The ionosphere is a part of the upper atmosphere, from about 85 km to 600 km altitude, comprising portions of the mesosphere, thermosphere and exosphere, distinguished because it is ionized by solar r ...
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The thermosphere is the layer of the Earth's atmosphere directly above the mesosphere and directly below the exosphere. Within this layer, ultraviolet radiation (UV) causes ionization. Called from ...
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This article is about the atmospheric mesosphere, for the Earth's mantle see Mesosphere (mantle). The mesosphere is the layer of the Earth's atmosphere that is directly above the stratosphere ...
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The troposphere is the lowest portion of Earth's atmosphere. It contains approximately 80% of the atmosphere's mass and 99% of its water vapor and aerosols. The average depth of the tropospher ...
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Bioethics is the study of typically controversial ethics brought about by advances in biology and medicine. It is also moral discernment as it relates to medical policy, practice, and research. Bioeth ...
Definition
Region is most commonly a term used in terrestrial sciences and astrophysics. Among the different sub-disciplines of geography it is an area studied by regional geographers. Regions consist of subregi ...
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In Newtonian physics, free fall is any motion of a body where its weight is the only force acting upon it. In the context of General Relativity where gravitation is reduced to a space-time curvature, ...
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