sluggish gradient

  • 1metamorphic rock — Any of a class of rocks that result from the alteration of preexisting rocks in response to changing geological conditions, including variations in temperature, pressure, and mechanical stress. The preexisting rocks may be igneous, sedimentary,… …

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  • 2river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …

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  • 3United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …

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  • 4Lentic ecosystems — are the ecosystems of lakes, ponds and swamps. Included in these environments are the biotic interactions (amongst plants, animals and micro organisms) together with the abiotic interactions (physical and chemical).cite book | last = Brown first …

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  • 5India — /in dee euh/, n. 1. Hindi, Bharat. a republic in S Asia: a union comprising 25 states and 7 union territories; formerly a British colony; gained independence Aug. 15, 1947; became a republic within the Commonwealth of Nations Jan. 26, 1950.… …

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  • 6inflammation — /in fleuh may sheuhn/, n. 1. Pathol. redness, swelling, pain, tenderness, heat, and disturbed function of an area of the body, esp. as a reaction of tissues to injurious agents. 2. the act or fact of inflaming. 3. the state of being inflamed.… …

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  • 7South Africa — Republic of, a country in S Africa; member of the Commonwealth of Nations until 1961. 42,327,458; 472,000 sq. mi. (1,222,480 sq. km). Capitals: Pretoria and Cape Town. Formerly, Union of South Africa. * * * South Africa Introduction South Africa… …

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  • 8Kobuk River — The Kobuk River is approximately convert|280|mi|km|0|lk=on long, located in the Arctic region of northwestern Alaska in the United States. [USGS Geographic Names Information System (GNIS). [http://geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO… …

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  • 9Cranleigh Line — [v · d · …

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  • 10Death Valley National Park — IUCN Category II (National Park) …

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  • 11Geography of Guyana — Map of Guyana The Geography of Guyana comprises the physical characteristics of the country in Northern South America and part of Caribbean South America, bordering the North Atlantic Ocean, between Suriname and Venezuela, with a land area of… …

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  • 12Sudd — Swamp from space, May 1993. This photograph was taken during the driest time of year summer rains generally extend from July through September. The Sudd (Arabic سد, sad, barrier ), also known as the Bahr al Jabal, As Sudd or Al Sudd, is a vast… …

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  • 13Hyperkalemia — Infobox Disease Name = Hyperkalemia Caption = potassium DiseasesDB = 6242 ICD10 = ICD10|E|87|5|e|70 ICD9 = ICD9|276.7 ICDO = OMIM = MedlinePlus = 001179 eMedicineSubj = emerg eMedicineTopic = 261 MeshID = D006947 Hyperkalemia (AE) or… …

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  • 14Geology of the Grand Teton area — The geology of the Grand Teton area consists of some of the oldest rocks and one of the youngest mountain ranges in North America. The Teton Range, mostly located in Grand Teton National Park, started to grow some 9 million years ago. An older… …

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  • 15Geology of the Death Valley area — The exposed geology of the Death Valley area presents a diverse and complex story that includes at least 23 formations of sedimentary units, two major gaps in the geologic record called unconformities, and at least one distinct set of related… …

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  • 16Eunectes murinus — Green Anaconda Scientific classification Kingdom: Animalia Phylum …

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  • 17Torpedinidae — Taxobox name = Torpedinidae image width = 240px image caption = Pacific electric ray, Torpedo californica regnum = Animalia phylum = Chordata classis = Chondrichthyes subclassis = Elasmobranchii ordo = Torpediniformes familia = Torpedinidae… …

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  • 18Nitrogen trifluoride — Nitrogen trifluoride …

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  • 19circulation — circulable /serr kyeuh leuh beuhl/, adj. /serr kyeuh lay sheuhn/, n. 1. an act or instance of circulating, moving in a circle or circuit, or flowing. 2. the continuous movement of blood through the heart and blood vessels, which is maintained… …

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  • 20marsh — marshlike, adj. /mahrsh/, n. a tract of low wet land, often treeless and periodically inundated, generally characterized by a growth of grasses, sedges, cattails, and rushes. [bef. 900; ME mershe, OE mer(i)sc (c. G Marsch). See MERE2, ISH1; cf.… …

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