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Because the sea is salty

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2/3 of the Earth's surface is covered by water. What many may not know, however, is that 97% of water is salty and only 3% is drinkable and useful to mankind.

But two-thirds of it is trapped in glaciers, icebergs and glaciers. substrates. This limits access to clean water by less than 1% in rivers, aquifers or lakes.

In short, clean water is a rare commodity, he says. p>

Salt in the oceans is the result of a process we would call decomposition where minerals such as salts and their chemicals found in rocks, for example, are transported from land to sea.

Salt, then, is usually comes from the rocks because of the rain. Rain is slightly more acidic than normal water because the carbon dioxide in the air mixes with the water to form carbonic acid.

In most cases, the rain is not acidic enough to harm plants and animals – although certain pollutants from factories and cars lead to acid rain, which can cause a number of problems.

Minerals and salts

Rain causes the rocks to erode or shatter over time. Thus minerals, including various salts, are released from rocks and leak into nearby soil or water.

Another source is the salt-producing minerals found in the earth's crust beneath. oceans, such as underwater volcanoes, geothermal springs.

Water penetrates the seabed through cracks, overheats and returns to the surface carrying dissolved minerals. Hydrothermal vents pour the chemical mixture with minerals into the sea. Also an additional source of minerals is air, which transports particles from land to sea

In short, all these processes make seawater salty.

Source: politis.com.cy

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