The water is saltier at the poles, and less salty at the equator.
It is saltier because it has no outlet to the sea.
Only God knows
well,it can't get more saltier and it can't get less.the denser the water is,the saltier it'll be.the less denser,the less salty it'll be.its the same amount of salt,just different density levels.
The Dead Sea is 33.7 % Salinity - The oceans average 3.5% salinity. So the Dead Sea is Roughly 10 times a salty as the Oceans. ----------------- I found another source (wikipedia.org)that states that the Dead Sea is 8.6 times as salty as the sea.
The water that doesn't evaporate into vapor stays in the ocean as liquid water. The oceans have a lot of liquid water. Over time, ocean water is always evaporating and turning into rain and comes back to the ocean; but the salts and minerals carried into the sea from rivers never evaporate. They stay dissolved in the ocean waters and make it saltier and saltier.
Great Salt Lake
It think that salt stays in the water because it gets frozen.
Rivers are not pure freshwater sources of water. As they flow to the ocean, they pick up small amounts of mineral salts. These slightly-salty rivers flow into the ocean, and as this is a continuous flow and there are thousands of rivers, all the salt builds up, causing the oceans to be saturated with salt. Also, because water evaporates and salt does not, the oceans get saltier over time.
My off-hand guess would be that they are getting less salty on average as fresh melt-water from Greenland and the polar caps enters the oceans.
yes because more salt is dissolved at the bottom of the sea
very painful a saltier fracture is when you dislocate and fracture a bone