|What is the percentage of the earth's salt water?|
|Question Date: 2014-08-11|
You may know that water covers nearly 75% of
the Earth’s surface, are much of the water is
contained within the world’s oceans. There is only
a small portion of freshwater sources on Earth:
lakes and rivers take a small part of that, but
most of the freshwater is either underground or
locked away, frozen in glaciers and ice caps.
Of all the water on Earth, over 97.5% is
contained as salt water, leaving just 2.5% as
About 97% of the earth's water is salt water, most
of this in the oceans. That being said there is
also a lot of water on Earth, and since it cycles,
we just have to be careful not to pollute the
valuable fresh water we have. Also, a good amount
of the fresh water on Earth (about 70%) is frozen
in glaciers and ice caps.
Oceans (which are the biggest bodies of salt water
on our planet) cover around 70% of the surface of
The result from a quick Google search: 97.2% of
the Earth's water is in the oceans, which is all
salt water. About 2% is glaciers (fresh), 0.6% is
groundwater (also fresh), and the rest (mainly
fresh) adds up to about 0.02%.
Now, WARNING: there is a LOT of water
locked away in rocks in the Earth's mantle. I
don't know how much there is. It wouldn't really
either be salt or fresh, though (it comes out as
steam when volcanoes erupt).
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