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Rapids cause water aeration of the stream or river, resulting in better water quality. [2] For a rapid to form, a necessary condition is the presence of a gradient, which refers to the river or stream's downward slope. When a river has a larger gradient, the water flows downhill faster. [3] Gradients are typically measured in feet per mile. [4]
The international scale of river difficulty is an American system used to rate the difficulty of navigating a stretch of river, or a single (sometimes whitewater) rapid. [1] The scale was created by the American Whitewater Association to evaluate rivers throughout the world, hence international in the title. [ 2 ]
Mile 93.1 – Salt Creek Rapid (3) Mile 93.9 – Granite Rapid (8) – One of the more difficult rapids with a strong push of hydraulics to the wall on river right. Mile 95.5 – Hermit Rapid (8) – Perhaps the strongest hydraulics and biggest waves in the canyon; terminus of the Hermit Trail; Motorized raft in Hermit Rapid (Mile 95.5) Mile 97 ...
[6] [7] [8] Quizlet's blog, written mostly by Andrew in the earlier days of the company, claims it had reached 50,000 registered users in 252 days online. [9] In the following two years, Quizlet reached its 1,000,000th registered user. [10] Until 2011, Quizlet shared staff and financial resources with the Collectors Weekly website. [11]
In biology, taxonomic rank (which some authors prefer to call nomenclatural rank [1] because ranking is part of nomenclature rather than taxonomy proper, according to some definitions of these terms) is the relative or absolute level of a group of organisms (a taxon) in a hierarchy that reflects evolutionary
On July 3, 2021, a raft on Raging River at Adventureland in Altoona, Iowa, carrying six passengers overturned, sending four guests to a local hospital with severe injuries. One of the passengers, an 11-year-old boy, later died. The ride was inspected the day before the incident and was found to be in normal working order. [4]
The scientific name of a species is a binomial or binomen, and comprises two Latin words, the first denoting the genus and the second denoting the species. [5] The scientific name of a subspecies is formed slightly differently in the different nomenclature codes.
The two-domain system is a biological classification by which all organisms in the tree of life are classified into two domains, Bacteria and Archaea. [ 1 ] [ 2 ] [ 3 ] It emerged from development of knowledge of archaea diversity and challenges the widely accepted three-domain system that classifies life into Bacteria, Archaea, and Eukarya . [ 4 ]