Salinity :: essays research papers

WHAT ARE THE EFFECTS OF EXCESS SALINITY ON PLANTS coarseness is a mineral that is form both in unharmed and liquid form. The liquid is c solelyed brine. brininess contains two elements, chlorine and sodium, and is know chemically as sodium chloride. Mineralogists call flavor that is found in mines halite. Salt is essential to health. Body cells must have salt in order of magnitude to live and work. Salt makes up about 0.9 percent of the blood and be 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. hardly less than phoebe bird percent of the salt produced in the world each year is apply in this way. Meat packers, chemical companies, hide and leather serve upors, and food processors, much(prenominal) as manufacturers of dairy products use salt and its by-products. Farmers feed salt to stock certificate and use it as a preservative for hay in storage. Factories, plants, laundries, and ot her industrial institutions use salt to soften pissing and condition it. Salt is also used to hold firm the materials used in edifice secondary roads. It is also used in heat-treating, smelting, and refining metals. There is a little more than pound of salt in each gal (or 30 grams in each liter) of seawater. It has been estimated Gagnard 2that if all the oceans dried up, they would intrust about 4,419,300 cubic miles of rock salt. That would be enough to c over all the United States except Alaska and Gawaii with a layer of salt more than 1 miles deep. Salt was first taken from the sea by scooping out shallow holes along the seashore. Waves, breaking along the shore, filled the holes with brine. The sun and wind causes the water in the brine to evaporate, leaving behind the crude salt. This process was known as the solar method. The solar method is still used. But, to speed the process of evaporation, the brine is put in enormous iron pans placed over extremely hot fires. Salt obtained in this manner is very pure. But it has been estimated that a single salt plant should contain at to the lowest degree 5,000 acres of land to make the solar system practical. Salt is found beneath the ground in almost every part of the world. sometimes the salt lies near the surface or even above it. Rocks of salt that appear above the ground are called salt licks.