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The oceans are salty because small amounts of salt from the land areas dissolve in the waters of streams and rivers, and are carried to the sea.
When water evaporates from the oceans into the atmosphere, the salt is left behind. The amount of salt dissolved in the oceans is, on average 3.5 % by weight.

Why is the ocean salty? - NOAA's National Ocean Service

oceanservice.noaa.gov/facts/whysalty.html

Ocean water is a complex solution of mineral salts and of decayed biologic ... in the foreground is nearly four times as salty as seawater and is so dense that a ...

Why is the ocean salty, but rivers flowing into it are not?

oceanservice.noaa.gov/facts/riversnotsalty.html

Rain replenishes freshwater in rivers and streams, so they don't taste salty. However, the water in the ocean collects all of the salt and minerals from all of the  ...

Why is the ocean salty? - U.S. Geological Survey

water.usgs.gov/edu/whyoceansalty.html

Dec 2, 2016 ... One way minerals and salts are deposited into the oceans is from outflow ... And, just so you don't think seawater is worthless, a cubic mile of it ...

Why is the Ocean Salty?

ponce.sdsu.edu/usgs_why_is_the_ocean_salty/usgs_why_is_the_ocean_salty.html

What arouses the scientist's curiosity is not so much why the ocean is salty, but why it isn't fresh like the rivers and streams that empty into it. Further, what is the ...

Why is the sea salty?

www.utdallas.edu/~pujana/oceans/why.html

So a few lakes are salty because rivers carried salts to the lakes, the water in the ... Water evaporates from the oceans to fall again as rain and to feed the rivers, ...

Why Is the Ocean Salty? Composition of Sea Water - Chemistry

chemistry.about.com/od/waterchemistry/f/why-is-the-ocean-salty.htm

Have you ever wondered why the ocean is salty and why most lakes are not? Here's a ... In the Dutch West Indies, the water is so salty it crystallizes into salt.

www.ask.com/youtube?q=Why Is the Ocean so Salty?&v=L9dpXa_Iemo
May 25, 2015 ... The ocean is salty, but most lakes and rivers are not. Why is this? Get 15% off http ://www.domain.com's s domain names and web hosting when ...

Why Is the Sea Salty? | Wonderopolis

wonderopolis.org/wonder/why-is-the-sea-salty-2

Ocean water is salty because it contains large amounts of dissolved minerals. ... The saline water of the Dead Sea is deadly to most living creatures, so you ...

BBC - Future - Why is the sea so salty?

www.bbc.com/future/story/20140411-why-is-the-sea-so-salty

Apr 11, 2014 ... Most of our planet's surface is covered in water – salt water. The oceans that support so much of Earth's life are around 3.5% sodium chloride ...