Salt is a mineral that is found both in solid and liquid form. The liquid is called brine. Salt contains two elements, chlorine and sodium, and is known chemically as sodium chloride. Mineralogists call salt that is found in mines halite. Salt is essential to health. Body cells must have salt in order to live and work. Salt makes up about 0.9 percent of the blood and body cells. It has been estimated that there are more than 14,000 uses for salt. Most people think of salt chiefly as a seasoning for food. But less than five percent of the salt produced in the world each year is used in this way. Meat packers, chemical companies, hide and leather processors, and food processors, such as manufacturers of dairy products use salt and its by-products. Farmers feed salt to livestock and use it as a preservative for hay in storage. Factories, plants, laundries, and other industrial institutions use salt to soften water and condition it. Salt is also used to hold firm the materials used in building secondary roads. It is also used in heat-treating, smelting, and refining metals. There is a little more than ¼ pound of salt in each gallon (or 30 grams in each liter) of seawa

through the building, it goes through crushers, passes over screens that separate it into crystals of various sizes, and is put in sacks or bulk carloads. These are shipped to consumers. But, Much of the salt produced in the United States comes from salt wells. This salt is dissolved by water and pumped to the surface. A salt well is drilled in much the same way that a water or oil well is drilled. The salt well gas a double pipe, or casing, sunk into it. One pipe is inside the other, leaving space between the two. Pure, fresh water is pumped down through this space to the salt vein below. It forms a solution of salt and water, which is heavier than pure water. The brine sinks to the bottom of the well. The solution is then forced up the inner pipe by the pressure of the fresh water that continues to come down. When a vein of salt lies very deep, air pressure forces the brine to the surface. The brine that comes from the well contains only the impurities that disso!

Pansies, or viola wittrockiana, are perennials that belong to the genus viola. However, pansies are treated as annuals. Pansies provide lots of color in borders, edginga and ground covers. Pansies grow in sun or shade. Pansies are found in white, blue, mahogany, red, rose yellow apricot, purple and bicolors. Most often petals of pansies are striped or botched. Usually they grow about 8 inches. To prolong bloom of pansies, pick flowers

Some topics in this essay:
Alaska Gawaii, PLANTS Salt, fresh water, salt produced, earth’s surface, water pumped, surface salt, percent salt, body cells, salt found, water brine, salt lies,