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  2. River - Wikipedia

    en.wikipedia.org/wiki/River

    The flow is then directed against the opposite bank of the river, which will erode into a more concave shape to accommodate the flow. The bank will still block the flow, causing it to reflect in the other direction. Thus, a bend in the river is created. [7] Rivers may run through low, flat regions on their way to the sea. [12]

  3. List of rivers by age - Wikipedia

    en.wikipedia.org/wiki/List_of_rivers_by_age

    This river may predate the break-up of western Gondwana as an extension of a proto-Congo river system, 200 Mya during the Jurassic. Ohio: 3~2.5 Mississippi River: Formed when the Laurentide Ice Sheet dammed the north flowing Teays River during the Pre-Illinoian glaciation. The drainage area of the Teays could no longer drain to the north, and ...

  4. Origin of water on Earth - Wikipedia

    en.wikipedia.org/wiki/Origin_of_water_on_Earth

    The mass of Earth's oceans is estimated to be 1.37 × 10 21 kg, which is 0.023% of the total mass of Earth, 6.0 × 10 24 kg. An additional 5.0 × 10 20 kg of water is estimated to exist in ice, lakes, rivers, groundwater, and atmospheric water vapor. [21] A significant amount of water is also stored in Earth's crust, mantle, and core.

  5. Portal:Rivers - Wikipedia

    en.wikipedia.org/wiki/Portal:Rivers

    Rivers get their alluvium from erosion, which carves rock into canyons and valleys. Rivers have sustained human and animal life for millennia, including the first human civilizations. The organisms that live around or in a river such as fish, aquatic plants, and insects have different roles, including processing organic matter and predation.

  6. Stream - Wikipedia

    en.wikipedia.org/wiki/Stream

    Freshwater's primary sources are precipitation and mountain snowmelt. However, rivers typically originate in the highlands, and are slowly created by the erosion of mountain snowmelt into lakes or rivers. Rivers usually flow from their source topographically, and erode as they pass until they reach the base stage of erosion.

  7. Subterranean river - Wikipedia

    en.wikipedia.org/wiki/Subterranean_river

    A subterranean river in the Cross Cave system of Slovenia. (Scale shown by people in photograph.) A subterranean river (also known as an underground river) is a river or watercourse that runs wholly or partly beneath the ground, one where the riverbed does not represent the surface of the Earth. [1]

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    mail.aol.com

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  9. Body of water - Wikipedia

    en.wikipedia.org/wiki/Body_of_water

    the physical confine of a river, slough or ocean strait consisting of a bed and banks. See also stream bed and strait. Cove: a coastal landform. Earth scientists generally use the term to describe a circular or round inlet with a narrow entrance, though colloquially the term is sometimes used to describe any sheltered bay. Creek