Dating on earth 2016
During this time, Earth rotates about its axis about 366.26 times.Earth is the densest planet in the Solar System and the largest of the four terrestrial planets.Earth's interior remains active with a solid iron inner core, a liquid outer core that generates the Earth's magnetic field, and a convecting mantle that drives plate tectonics.Within the first billion years of Earth's history, life appeared in the oceans and began to affect the Earth's atmosphere and surface, leading to the proliferation of aerobic and anaerobic organisms.More precisely, the geoid is the surface of gravitational equipotential at mean sea level. It is composed mostly of iron (32.1%), oxygen (30.1%), silicon (15.1%), magnesium (13.9%), sulfur (2.9%), nickel (1.8%), calcium (1.5%), and aluminium (1.4%), with the remaining 1.2% consisting of trace amounts of other elements.Due to mass segregation, the core region is estimated to be primarily composed of iron (88.8%), with smaller amounts of nickel (5.8%), sulfur (4.5%), and less than 1% trace elements.It has cognates in every Germanic language, and their proto-Germanic root has been reconstructed as *erþō.In its earliest appearances, eorðe was already being used to translate the many senses of Latin terra and Greek γῆ (gē): the ground, Originally, earth was written in lowercase, and from early Middle English, its definite sense as "the globe" was expressed as the earth.
The majority of Earth's polar regions are covered in ice, including the Antarctic ice sheet and the sea ice of the Arctic ice pack.The most common rock constituents of the crust are nearly all oxides: chlorine, sulfur, and fluorine are the important exceptions to this and their total amount in any rock is usually much less than 1%.Over 99% of the crust is composed of 11 oxides, principally silica, alumina, iron oxides, lime, magnesia, potash, and soda.This facilitated tool use and encouraged communication that provided the nutrition and stimulation needed for a larger brain, which allowed the evolution of humans.
The development of agriculture, and then civilization, led to humans having an influence on Earth and the nature and quantity of other life forms that continues today. As a red giant, the Sun will lose roughly 30% of its mass, so, without tidal effects, Earth will move to an orbit 1.7 AU (250 million km; 160 million mi) from the Sun when the star reaches its maximum radius.
"Earth's atmosphere") but writes it in lowercase when preceded by the (e.g. It almost always appears in lowercase in colloquial expressions such as "what on earth are you doing? The formation and evolution of Solar System bodies occurred along with the Sun.