Because of all the nasty things that live in it
2007-01-01 00:01:04
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answer #1
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answered by Young boi 5
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As rainwater passes through soil and percolates through rocks, it dissolves some of the minerals, a process called weathering. This is the water we drink, and of course, we cannot taste the salt because its concentration is too low. Eventually, this water with its small load of dissolved minerals or salts reaches a stream and flows into lakes and the ocean. The annual addition of dissolved salts by rivers is only a tiny fraction of the total salt in the ocean. The dissolved salts carried by all the world’s rivers would equal the salt in the ocean in about 200 to 300 million years.
The Great Salt Lake, Dead Sea, and other salt lakes have no outlets. All the water that flows into these lakes escapes only by evaporation. When water evaporates, the dissolved salts are left behind. So a few lakes are salty because rivers carried salts to the lakes, the water in the lakes evaporated and the salts were left behind. After years and years of river inflow and evaporation, the salt content of the lake water built up to the present levels. The same process made the seas salty. Rivers carry dissolved salts to the ocean. Water evaporates from the oceans to fall again as rain and to feed the rivers, but the salts remain in the ocean. Because of the huge volume of the oceans, hundreds of millions of years of river input were required for the salt content to build to its present level.
hydrothermal vents, represent places on the ocean floor where sea water that has seeped into the rocks of the oceanic crust, has become hotter, and has dissolved some of the minerals from the crust, now flows back into the ocean. With the hot water comes a large complement of dissolved minerals.
final process that provides salts to the oceans/seas is submarine volcanism, the eruption of volcanoes under water.
2007-01-01 08:09:16
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answer #2
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answered by BrInGiToN 2
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William Buckland answered this question in 1830 - you can read in the implication!
(Paraphrased) In the whole machinery of springs and rivers, constructed hills and valleys, and the apparatus that is kept in action for their duration; of never-failing fountains as to supply the earth by constant evaporation. So also in the adjustment of the relative quantities of sea and land; and the appointment of the atmosphere to be the vehicle of this wonderful and unceasing circulation; in thus separating these waters from their native salt, (which is of the highest utility to preserve the purity of the sea) and transmitting them in genial showers to scatter fertility over the earth, in all these we find such undeniable proofs of a nicely balanced adaption of means to ends.
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james
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2007-01-01 13:55:25
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answer #3
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answered by james 3
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It is not just bcoz of NaCl but high concentration of all the salts present in the sea.
Rivers from mountains took salts there tothe sea however rain does not take it back as evaporation is distillation and free water is obtained.
Salt content in mountain is thus less (heard of goitre due to less conc. of iodine there?)
2007-01-01 08:33:36
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answer #4
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answered by amudwar 3
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It's because the the high levels of Sodium Cloride
2007-01-01 08:00:10
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answer #5
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answered by Bill 6
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must be all the fish jerking off
2007-01-01 08:00:46
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answer #6
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answered by Anonymous
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