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In the Greek, the brother set out to Constantinople by ship. In the Norse, one day a skipper wanted to buy the hand-mill from him, and eventually persuaded him. In all versions, the new owner took it to sea and set it to grind out salt. It ground out salt until it sank the boat, and then went on grinding in the sea, turning the sea salty.
The pH value at the surface of oceans in pre-industrial time (before 1850) was around 8.2. [9] Since then, it has been decreasing due to a human-caused process called ocean acidification that is related to carbon dioxide emissions: Between 1950 and 2020, the average pH of the ocean surface fell from approximately 8.15 to 8.05. [10]
About 3.5% of the weight of seawater comes from dissolved salts. But just how did the salt get in there? Why is the ocean salty? Lets dive in.
Oceans and marginal seas as defined by the International Maritime Organization. The sea is the interconnected system of all the Earth's oceanic waters, including the Atlantic, Pacific, Indian, Southern and Arctic Oceans. [1] However, the word "sea" can also be used for many specific, much smaller bodies of seawater, such as the North Sea or the ...
Annual mean sea surface salinity for the World Ocean. Data from the World Ocean Atlas 2009. [1] International Association for the Physical Sciences of the Oceans (IAPSO) standard seawater. Salinity (/ s ə ˈ l ɪ n ɪ t i /) is the saltiness or amount of salt dissolved in a body of water, called saline water (see also soil salinity). It is ...
From shallow waters to the deep sea, the open ocean to rivers and lakes, numerous terrestrial and marine species depend on the surface ecosystem and the organisms found there. [28] The ocean's surface acts like a skin between the atmosphere above and the water below, and harbours an ecosystem unique to this environment.
a type of marsh that is a transitional zone between land and an area, such as a slough, bay, or estuary, with salty or brackish water. Sea: a large expanse of saline water connected with an ocean, or a large, usually saline, lake that lacks a natural outlet such as the Caspian Sea and the Dead Sea. In common usage, often synonymous with the ocean.
The oceans are not just a marine habitat. They are also a workplace, a highway, a prison, a grocery store, a trash can, a cemetery — and much more. Why we need to think about the oceans differently
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