
Privacy
Earth | |
---|---|
State | |
Country | |
Capital | |
Population | 0 |
Earth is the third planet from the Sun and the only astronomical object known to harbor life. About 29% of Earth's surface is land consisting of continents and islands. The remaining 71% is covered with water, mostly by oceans but also lakes, rivers and other fresh water, which together constitute the hydrosphere. Much of Earth's polar regions are covered in ice. Earth's outer layer is divided into several rigid tectonic plates that migrate across the surface over many millions of years. Earth's interior remains active with a solid iron inner core, a liquid outer core that generates Earth's magnetic field, and a convecting mantle that drives plate tectonics.
According to radiometric dating estimation and other evidence, Earth formed over 4.5 billion years ago. Within the first billion years of Earth's history, life appeared in the oceans and began to affect Earth's atmosphere and surface, leading to the proliferation of anaerobic and, later, aerobic organisms. Some geological evidence indicates that life may have arisen as early as 4.1 billion years ago. Since then, the combination of Earth's distance from the Sun, physical properties and geological history have allowed life to evolve and thrive. In the history of life on Earth, biodiversity has gone through long periods of expansion, occasionally punctuated by mass extinctions.
Greensboro | |
---|---|
State | |
Country | |
Capital | |
Population | 0 |
Greensboro ( (listen); formerly Greensborough) is a city in and the county seat of Guilford County, North Carolina, United States. It is the third-most populous city in North Carolina, the 68th-most populous city in the United States, and the largest city in the Piedmont Triad metropolitan region. At the 2010 United States Census the city population was 269,666. In 2019, the estimated population was 296,710. Three major interstate highways (Interstate 40, Interstate 85, and Interstate 73) in the Piedmont region of central North Carolina were built to intersect at this city.
In 1808, "Greensborough" (the spelling before 1895) was planned around a central courthouse square to succeed Guilford Court House as the county seat. The county courts were thus placed closer to the geographical center of the county, a location more easily reached at the time by the majority of the county's citizens, who depended on horse and foot for travel.
In 2003, the previous Greensboro – Winston-Salem – High Point metropolitan statistical area (MSA) was re-defined by the U.S. Office of Management and Budget. This region was separated into the Greensboro–High Point MSA and the Winston-Salem MSA. The 2010 population for the Greensboro–High Point MSA was 723,801.
Wœrth or Woerth (German: Wörth an der Sauer) is a commune in the Bas-Rhin department and Grand...
Mbalmayo is a city in Cameroon's Centre Province. The town had 60,091 inhabitants in 2012. It...
Amarillo ( AM-ə-RIL-oh) is a city in the U.S. state of Texas and the seat of Potter County. It is...