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2. Water distribution on Earth - Wikipedia

   en.wikipedia.org/wiki/Water_distribution_on_Earth

   Most water in Earth's atmosphere and crust comes from saline seawater, while fresh water accounts for nearly 1% of the total. The vast bulk of the water on Earth is saline or salt water, with an average salinity of 35‰ (or 3.5%, roughly equivalent to 34 grams of salts in 1 kg of seawater), though this varies slightly according to the amount of runoff received from surrounding land.

3. Groundwater - Wikipedia

   en.wikipedia.org/wiki/Groundwater

   This is an accepted version of this page This is the latest accepted revision, reviewed on 15 January 2025. Water located beneath the ground surface An illustration showing groundwater in aquifers (in blue) (1, 5 and 6) below the water table (4), and three different wells (7, 8 and 9) dug to reach it. Groundwater is the water present beneath Earth's surface in rock and soil pore spaces and in ...

4. Origin of water on Earth - Wikipedia

   en.wikipedia.org/wiki/Origin_of_water_on_Earth

   The deuterium to hydrogen ratio for ocean water on Earth is known very precisely to be (1.5576 ± 0.0005) × 10 −4. [35] This value represents a mixture of all of the sources that contributed to Earth's reservoirs, and is used to identify the source or sources of Earth's water.

5. Mariana Trench - Wikipedia

   en.wikipedia.org/wiki/Mariana_Trench

   At the bottom of the trench, the water column above exerts a pressure of 1,086 bar (15,750 psi), more than 1,071 times the standard atmospheric pressure at sea level. At this pressure, the density of water is increased by 4.96%. [citation needed] The temperature at the bottom is 1 to 4 °C (34 to 39 °F). [4]

6. AOL Mail

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Extremes on Earth - Wikipedia

   en.wikipedia.org/wiki/Extremes_on_Earth

   The point on the surface of Earth's crust closest to the Earth's centre (interpreted as a land surface or sea floor) is the bottom of Litke Deep, in the Arctic Ocean, at 6,351.7043 km (3,947 mi) from Earth's centre; the deep's depth relative to sea level is 5,449 m (17,877 ft).