Salt vs Perth

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Salt is a mineral composed primarily of sodium chloride (NaCl), a chemical compound belonging to the larger class of salts; salt in its natural form as a crystalline mineral is known as rock salt or halite. Salt is present in vast quantities in seawater, where it is the main mineral constituent. The open ocean has about 35 grams (1.2 oz) of solids per liter of sea water, a salinity of 3.5%. Salt is essential for life in general, and saltiness is one of the basic human tastes. Salt is one of the oldest and most ubiquitous food seasonings, and salting is an important method of food preservation. Some of the earliest evidence of salt processing dates to around 6,000 BC, when people living in the area of present-day Romania boiled spring water to extract salts; a salt-works in China dates to approximately the same period. Salt was also prized by the ancient Hebrews, the Greeks, the Romans, the Byzantines, the Hittites, Egyptians, and the Indians. Salt became an important article of trade and was transported by boat across the Mediterranean Sea, along specially built salt roads, and across the Sahara on camel caravans. The scarcity and universal need for salt have led nations to go to war over it and use it to raise tax revenues. Salt is used in religious ceremonies and has other cultural and traditional significance.

Salt is processed from salt mines, and by the evaporation of seawater (sea salt) and mineral-rich spring water in shallow pools. Its major industrial products are caustic soda and chlorine; salt is used in many industrial processes including the manufacture of polyvinyl chloride, plastics, paper pulp and many other products. Of the annual global production of around two hundred million tonnes of salt, about 6% is used for human consumption. Other uses include water conditioning processes, de-icing highways, and agricultural use. Edible salt is sold in forms such as sea salt and table salt which usually contains an anti-caking agent and may be iodised to prevent iodine deficiency. As well as its use in cooking and at the table, salt is present in many processed foods. Sodium is an essential nutrient for human health via its role as an electrolyte and osmotic solute. Excessive salt consumption may increase the risk of cardiovascular diseases, such as hypertension, in children and adults. Such health effects of salt have long been studied. Accordingly, numerous world health associations and experts in developed countries recommend reducing consumption of popular salty foods. The World Health Organization recommends that adults should consume less than 2,000 mg of sodium, equivalent to 5 grams of salt per day.

Source: Wikipedia

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Perth ( (listen); Nyungar: Boorloo) is the capital and largest city of the Australian state of Western Australia (WA). It is Australia's fourth-most populous city, with a population of 2.14 million living in Greater Perth. Perth is part of the South West Land Division of Western Australia, with most of the metropolitan area on the Swan Coastal Plain between the Indian Ocean and the Darling Scarp. The city has expanded outward from the original settlements on the Swan River, upon which the city's central business district and port of Fremantle are situated. Captain James Stirling founded Perth in 1829 as the administrative centre of the Swan River Colony. It was named after the town of Perth, Scotland, due to the influence of Stirling's patron Sir George Murray, who had connections with the area. It gained city status in 1856, although the Perth City Council currently governs only a small area around the central business district. The city's population increased substantially as a result of the Western Australian gold rushes in the late 19th century. It has grown steadily since World War II due to a high net migration rate. Post-war immigrants were predominantly from Britain and Southern Europe, while more recent arrivals have led to a large population of Asian descent. Several mining booms in other parts of Western Australia in the late 20th and early 21st centuries saw Perth become the regional headquarters for large mining operations.

Perth contains a number of important public buildings as well as various historic sites. Notable government buildings include Parliament House, Government House, the Supreme Court Buildings and the Perth Mint. The city is served by Fremantle Harbour and Perth Airport. It was a naval base for the Allies during World War II and the Royal Australian Navy's Fleet Base West is located on Garden Island. All five of Western Australia's universities are based in Perth. The city has been ranked among the world's most liveable cities and was classified by the Globalization and World Cities Research Network in 2020 as a Beta global city.Perth is divided into 30 local government areas and over 250 suburbs, with the metropolitan boundaries stretching from Two Rocks in the north to Singleton in the south, and east inland to The Lakes. Outside of the central business district, important urban centres within the metropolitan area include Armadale, Fremantle, Joondalup, Midland and Rockingham. Most of those were originally established as separate settlements and retained a distinct identity after being subsumed into the wider metropolitan area. Mandurah, Western Australia's second-largest city, forms a conurbation with Perth along the coast, though for most purposes it is still considered a separate city.

Source: Wikipedia