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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.
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Galloway Township is a township in Atlantic County, New Jersey, United States. At 114.49 square miles (296.5 km2) of total area (land and water combined), Galloway Township is the largest municipality in the state. As of the 2010 United States Census, the township's population was 37,349, reflecting an increase of 6,140 (+19.7%) from the 31,209 counted in the 2000 Census, which had in turn increased by 7,879 (+33.8%) from the 23,330 counted in the 1990 Census; The increase of more than 14,000 in population since the 1990 Census was the 11th-highest in the state.Galloway Township was incorporated by Royal charter on April 4, 1774, from portions of Egg Harbor Township, when it was still part of Gloucester County.