Earth Wikipedia. Earth is the third planet from the Sun and the only object in the Universe known to harbor life. According to radiometric dating and other sources of evidence, Earth formed over 4 billion years ago. Earths gravity interacts with other objects in space, especially the Sun and the Moon, Earths only natural satellite. Download PC Game Sexy Beach 3 Free Download PC Download Free Sexy Beach 3 PC Game Full Download Download Sexy Beach 3 Download Free Game For PC. Ova Games Free games to download, Free downloadable games, Repack pc game, Best pc games, Single link pc game, Direct link games download. It was a story that was too good to pass up. The Svalbard doomsday seed vault had flooded because of global warminginduced high temperatures melting the. XWX7mFBUZD4/VYaEwt51iAI/AAAAAAAADYI/XjDBQiz0puE/s1600/empire-earth-2-gold-edition-pc-screenshot-www.ovagames.com-1.jpg' alt='Empire Earth 2 Full Version Rip' title='Empire Earth 2 Full Version Rip' />Earth revolves around the Sun in 3. Earth year. During this time, Earth rotates about its axis about 3. Earths axis of rotation is tilted, producing seasonal variations on the planets surface. The gravitational interaction between the Earth and Moon causes ocean tides, stabilizes the Earths orientation on its axis, and gradually slows its rotation. Earth is the densest planet in the Solar System and the largest of the four terrestrial planets. Earths lithosphere is divided into several rigid tectonic plates that migrate across the surface over periods of many millions of years. About 7. 1 of Earths surface is covered with water, mostly by oceans. The remaining 2. 9 is land consisting of continents and islands that together have many lakes, rivers and other sources of water that contribute to the hydrosphere. The majority of Earths polar regions are covered in ice, including the Antarctic ice sheet and the sea ice of the Arctic ice pack. Earths interior remains active with a solid iron inner core, a liquid outer core that generates the Earths magnetic field, and a convecting mantle that drives plate tectonics. Use Css Templates Dreamweaver. Within the first billion years of Earths history, life appeared in the oceans and began to affect the Earths atmosphere and surface, leading to the proliferation of aerobic and anaerobic organisms. Some geological evidence indicates that life may have arisen as much as 4. Since then, the combination of Earths distance from the Sun, physical properties, and geological history have allowed life to evolve and thrive. In the history of the Earth, biodiversity has gone through long periods of expansion, occasionally punctuated by mass extinction events. Over 9. 9 of all species3. Earth are extinct. Estimates of the number of species on Earth today vary widely 3. Over 7. 4 billion humans live on Earth and depend on its biosphere and natural resources for their survival. Humans have developed diverse societies and cultures politically, the world has about 2. Name and etymology. The modern English word Earth developed from a wide variety of Middle English forms,n 6 which derived from an Old English noun most often spelled eore. It has cognates in every Germanic language, and their proto Germanic root has been reconstructed as er. In its earliest appearances, eore was already being used to translate the many senses of Latinterra and Greek g the ground,n 7 its soil,n 8 dry land,n 9 the human world,n 1. As with Terra and Gaia, Earth was a personified goddess in Germanic paganism the Angles were listed by Tacitus as among the devotees of Nerthus,4. Norse mythology included Jr, a giantess often given as the mother of Thor. Originally, earth was written in lowercase, and from early Middle English, its definite sense as the globe was expressed as the earth. By Early Modern English, many nouns were capitalized, and the earth became and often remained the Earth, particularly when referenced along with other heavenly bodies. More recently, the name is sometimes simply given as Earth, by analogy with the names of the other planets. House styles now vary Oxford spelling recognizes the lowercase form as the most common, with the capitalized form an acceptable variant. Another convention capitalizes Earth when appearing as a name e. Earths atmosphere but writes it in lowercase when preceded by the e. It almost always appears in lowercase in colloquial expressions such as what on earth are you doing5. Chronology. Formation. Artists impression of the early Solar Systems planetary disk. The oldest material found in the Solar System is dated to 7. Bya. 5. 1 By 7. Bya5. Earth had formed. The formation and evolution of Solar System bodies occurred along with the Sun. In theory, a solar nebula partitions a volume out of a molecular cloud by gravitational collapse, which begins to spin and flatten into a circumstellar disk, and then the planets grow out of that disk along with the Sun. A nebula contains gas, ice grains, and dust including primordial nuclides. According to nebular theory, planetesimals formed by accretion, with the primordial Earth taking 1. Mys to form. 5. 3A subject of on going research is the formation of the Moon, some 4. Bya. 5. 4 A working hypothesis is that it was formed by accretion from material loosed from Earth after a Mars sized object, named Theia, impacted Earth. In this scenario, the mass of Theia was approximately 1. Earth,5. 6 it impacted Earth with a glancing blow,5. Earth. Between approximately 4. Bya, numerous asteroid impacts during the Late Heavy Bombardment caused significant changes to the greater surface environment of the Moon, and by inference, to that of Earth. Geological history. Earths atmosphere and oceans were formed by volcanic activity and outgassing that included water vapor. The origin of the worlds oceans was condensation augmented by water and ice delivered by asteroids, protoplanets, and comets. In this model, atmospheric greenhouse gases kept the oceans from freezing when the newly forming Sun had only 7. By 7. 00. 03. 50. Bya, Earths magnetic field was established, which helped prevent the atmosphere from being stripped away by the solar wind. A crust formed when the molten outer layer of Earth cooled to form a solid. The two models6. Earth history6. The Amazing World Of Gumball Crazy Character Creator Challenge Game. Continents formed by plate tectonics, a process ultimately driven by the continuous loss of heat from Earths interior. On time scales lasting hundreds of millions of years, the supercontinents have assembled and broken apart. Roughly 7. 00. 27. Mya, one of the earliest known supercontinents, Rodinia, began to break apart. The continents later recombined to form Pannotia, 6. Mya, then finally Pangaea, which also broke apart 7. Mya. 6. 8The present pattern of ice ages began about 7. Mya and then intensified during the Pleistocene about 7. Mya. High latitude regions have since undergone repeated cycles of glaciation and thaw, repeating about every 4. The last continental glaciation ended 1. Driver Hisense Eg98 Pc. Origin of life and evolution. Chemical reactions led to the first self replicating molecules about four billion years ago. A half billion years later, the last common ancestor of all life arose. The evolution of photosynthesis allowed the Suns energy to be harvested directly by life forms. The resultant molecular oxygen O2 accumulated in the atmosphere and due to interaction with ultraviolet solar radiation, formed a protective ozone layer O3 in the upper atmosphere. The incorporation of smaller cells within larger ones resulted in the development of complex cells called eukaryotes. True multicellular organisms formed as cells within colonies became increasingly specialized. Aided by the absorption of harmful ultraviolet radiation by the ozone layer, life colonized Earths surface. Among the earliest fossil evidence for life is microbial mat fossils found in 3. Western Australia,7. Western Greenland,7. Western Australia. During the Neoproterozoic, 7. Mya, much of Earth might have been covered in ice.