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Tetrahydrobiopterin (BH 4, THB), also known as sapropterin (), [5] [6] is a cofactor of the three aromatic amino acid hydroxylase enzymes, [7] used in the degradation of amino acid phenylalanine and in the biosynthesis of the neurotransmitters serotonin (5-hydroxytryptamine, 5-HT), melatonin, dopamine, norepinephrine (noradrenaline), epinephrine (adrenaline), and is a cofactor for the ...
Ontario has 52 cities, [1] which together had in 2016 a cumulative population of 9,900,179 and average population of 190,388. [2] The most and least populous are Toronto and Dryden, with 2,794,356 and 7,749 residents, respectively. [2] Ontario's newest city is Richmond Hill, whose council voted to change from a town to a city on March 26, 2019. [3]
A map showing which census divisions of Ontario are counties: ... Crop and trace of Image:Canada (geolocalisation).svg; trace of Image:Ontario subdivisions.PNG. Author:
Tetrahydroxyborate is an inorganic anion with the chemical formula [BH 4 O 4] − or [B(OH) 4] −.It contributes no colour to tetrahydroxyborate salts. It is found in the mineral hexahydroborite, Ca(B(OH) 4) 2 · 2 H 2 O, originally formulated CaB 2 O 4 · 6 H 2 O. [2]
Distribution of Alberta's 19 cities and 12 other communities eligible for city status. To qualify as a city in Alberta, a sufficient population size (10,000 people or more) must be present and a majority of the buildings must be on parcels of land less than 1,850 square metres (19,900 sq ft). [1]
This is a route-map template for the Canada–United States border, a boundary in Canada and the United States.. For a key to symbols, see {{railway line legend}}.; For information on using this template, see Template:Routemap.
English place names in Canada is a list of Canadian place names which are named after places in England, carried over by English emigrants and explorers from the United Kingdom and Ireland. The names can also be derived from places founded by people with English surnames.
This is a list of current and former company towns in Canada. True company towns are those "closed communities owned and administered by the industrial employer". [ 1 ] Other rural communities which did not function strictly in this way but were still dominated by a single industry may also be called company towns and are featured in this list.