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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.
Recursive islands and lakes. Aral Sea, formerly the third largest lake in the world, with an area of 68,000 km 2 (26,300 sq mi) Lake Chad, formerly the eleventh largest lake in the world, with an area of 26,000 km 2 (10,000 sq mi) Lake Urmia, formerly with an area of 5,200 km 2 (2,000 sq mi), but down to a tenth that size in 2017.
This article lists rivers by their average discharge measured in descending order of their water flow rate. Here, only those rivers whose discharge is more than 2,000 m 3 /s (71,000 cu ft/s) are shown. It can be thought of as a list of the biggest rivers on Earth, measured by a specific metric. For context, the volume of an Olympic-size ...
According to the United States Census Bureau, the City of Chicago has a total area of 606.1 km 2 (234.0 mi 2 ). 588.3 km 2 (227.1 mi 2) of it is land and 17.8 square kilometres (6.9 sq mi) of it is water. The total area is 2.94% water. The city has been built on relatively flat land, the average height of land is 579 feet (176 m) above sea level.
NASA just announced that they've found 219 potential planets, and of those, 10 are close to the size of Earth and could possibly sustain life.
Earth is rounded into an ellipsoid with a circumference of about 40,000 km. It is the densest planet in the Solar System. Of the four rocky planets, it is the largest and most massive. Earth is about eight light-minutes away from the Sun and orbits it, taking a year (about 365.25 days) to complete one revolution.
Earth 's surface is dominated by the ocean, which forms 75% of Earth's surface. An ocean world, ocean planet or water world is a type of planet that contains a substantial amount of water in the form of oceans, as part of its hydrosphere, either beneath the surface, as subsurface oceans, or on the surface, potentially submerging all dry land.
Currently most of the objects of mass between 10 9 kg to 10 12 kg (less than 1000 teragrams (Tg)) listed here are near-Earth asteroids (NEAs). The Aten asteroid 1994 WR12 has less mass than the Great Pyramid of Giza, 5.9 × 10 9 kg. For more about very small objects in the Solar System, see meteoroid, micrometeoroid, cosmic dust, and ...