page_title: Natural environment
section_title: Lakes
hierarchical_section_title: Natural environment / Water on Earth / Lakes
caption_attribution_description: Vista del Lago Lácar, en los alrededores de San Martín de los Andes, Provincia de Neuquén, República Argentina. Fotografía tomada el 15 de marzo de 2006.
context_page_description: The natural environment encompasses all living and non-living things occurring naturally, meaning in this case not artificial. The term is most often applied to the Earth or some parts of Earth. This environment encompasses the interaction of all living species, climate, weather and natural resources that affect human survival and economic activity.
  The concept of the natural environment can be distinguished as components.That is given below:
  First one-Complete ecological units that function as natural systems without massive civilized human intervention, including all vegetation, microorganisms, soil, rocks, atmosphere, and natural phenomena that occur within their boundaries and their nature.
  Second one- Universal natural resources and physical phenomena that lack clear-cut boundaries, such as air, water, and climate, as well as energy, radiation, electric charge, and magnetism, not originating from civilized human actions.
  In contrast to the natural environment is the built environment.
context_section_description: A lake (from Latin lacus) is a terrain feature, a body of water that is localized to the bottom of basin. A body of water is considered a lake when it is inland, is not part of an ocean, and is larger and deeper than a pond.
  Natural lakes on Earth are generally found in mountainous areas, rift zones, and areas with ongoing or recent glaciation. Other lakes are found in endorheic basins or along the courses of mature rivers. In some parts of the world, there are many lakes because of chaotic drainage patterns left over from the last Ice Age. All lakes are temporary over geologic time scales, as they will slowly fill in with sediments or spill out of the basin containing them.
caption: Lácar Lake, of glacial origin, in the province of Neuquén, Argentina
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