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This probably seems a little strange that some body of water on the earth are salted and others are not. They are all fed by the same fresh rainwater, after all, and all follow a similar cycle of evaporation, condensation and precipitation. So why is there a difference? Why are the oceans salted and lakes, rivers and tanks?

Well, the short answer is the following: you look badly. The oceans are salted not because of what falls from the sky but what is already on earth.

Of course, this may seem counter-intuitive, but the ocean employee is actually the result of a chain reaction that took place on hundreds of millions of years.Yes, the ocean did not usually be so salty. On the EULS, the rain fell on the ground and, since it is slightly acid - due to traces of dissolved carbon dioxide, it picks up air-it rods rocks over time, dissolving some of the minerals that's going.

These ions (that's what dissolved minerals are called when they have a positive or negative charge) are then washed in rivers and streams, which feed in the oceans. Ocean organisms use some of these ions, eliminating them from water. Others are left in the ocean where they are in time, in particular, chloride and sodium, which together create an salt solution.

Just howa lot The salt flows into the oceans?

According toNational Oceans and Atmosphere AdministrationThe rivers and streams arising from the United States discharge only 225 million tonnes of dissolved solids and 513 million tonnes of sediment suspended from the ocean each year. Globally, rivers account for about 4 billion tonnes of dissolved salts in the ocean.

Riverare not the only source salt in the oceans. The areas on the ocean floor are known as hydrothermal vents are places where seawater softens in the rocks of the ocean crust, the dissolution of minerals and its back in the ocean. Underwater volcano eruptions can also contribute because seawater reacts to hot rock and dissolves some of the minerals of the process.

Since rivers and streams wear sediments in the ocean and are then reconstituted of rain, they are not salty, while the ocean, which continues to collect the salt from the rivers that sleep. In fact, the "fresh" water has some of the same salt minerals as salt water, but in such difficult concentrations that you do not really taste it.

On the other hand, body of water such as the great salt lake and the Dead Sea are salty because they have no outlet, so all the water that pours it does not escape only by evaporation, leaving minerals Salted behind.

Considering that the oceans cover 70% of the earth and 97% of all the waters of the planet are the saline solution, there is a lot of salt in the oceans (especially for salt to have had 200 to 300 million years to accumulate). According to the American geological survey, "if the salt of the ocean could be removed and extends uniformly on the earth surface of the Earth, it would be a layer of more than 500 feet (166 meters) of Thickness, a height of an office building of 40 floors. "And now you know how all this happened. And for a more fascinating insight on the big blue sea, here is30 reasons why the ocean is more frightening than space.

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