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Total atmospheric mass is 5.1480 × 10 18 kg (1.13494 × 10 19 lb), [41] about 2.5% less than would be inferred from the average sea-level pressure and Earth's area of 51007.2 megahectares, this portion being displaced by Earth's mountainous terrain. Atmospheric pressure is the total weight of the air above unit area at the point where the ...
John does not state all of the reasons why he came back, but one of them is to prevent Jenna from selling his brother's office to Pearl . At school, Matt ( Zach Roerig ) thanks Elena ( Nina Dobrev ) for being there for him while Jeremy ( Steven R. McQueen ) and Tyler ( Michael Trevino ) talk about Vicky.
Earth Hour is a worldwide movement organized by the World Wildlife Fund (WWF). The event is held annually, encouraging the individuals, communities, and businesses to give an hour for Earth, and additionally marked by landmarks and businesses switching off non-essential electric lights, for one hour from 8:30 to 9:30 p.m., usually on the last Saturday of March, as a symbol of commitment to the ...
Gaia does not seem to have any personal activity. In the Iliad, Alpheia beats with her hands the bountiful ("polyphorbos") earth, but she calls Hades and Persephone to avenge her against her son. [13] In the poems of Hesiod, she is personified. Gaia has a significant role in the evolution of the world. [14]
The 8.8 cm Flak 18 (Sfl.) auf Zugkraftwagen 12t (Sd.Kfz. 8), also known as the Bunkerflak or Bufla, [1] was a German Wehrmacht half-track self-propelled gun developed before World War II and used in the first half of the war.
The Acropolis at Athens (1846) by Leo von Klenze.Athena's name probably comes from the name of the city of Athens. [4] [5]Athena is associated with the city of Athens. [4] [6] The name of the city in ancient Greek is Ἀθῆναι (Athȇnai), a plural toponym, designating the place where—according to myth—she presided over the Athenai, a sisterhood devoted to her worship. [5]
Estimates of world population by their nature are an aspect of modernity, possible only since the Age of Discovery.Early estimates for the population of the world [10] date to the 17th century: William Petty, in 1682, estimated the world population at 320 million (current estimates ranging close to twice this number); by the late 18th century, estimates ranged close to one billion (consistent ...
In mathematics, and more specifically in linear algebra, a linear map (also called a linear mapping, linear transformation, vector space homomorphism, or in some contexts linear function) is a mapping between two vector spaces that preserves the operations of vector addition and scalar multiplication.