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The history of water supply and sanitation is one of a logistical challenge to provide clean water and sanitation systems since the dawn of civilization. Where water resources, infrastructure or sanitation systems were insufficient, diseases spread and people fell sick or died prematurely. Astronaut Jack Lousma taking a shower in space, 1974.
US Census Bureau map depicting territorial acquisitions, 2007. After Japan's defeat in World War II, the Japanese-ruled Northern Mariana Islands came under control of the United States. [ 1] The United States of America was formed after thirteen British colonies in North America declared independence from the British Empire on July 4, 1776.
Campus. Iowa State's main campus features 490 acres of trees, plants and classically designed buildings. The concept of an open central campus encircled by buildings, was the vision of Iowa State's first president, Adonijah Welch. The campus is dominated by a large 20 acre central lawn known as Central Campus.
The geography of Iowa includes the study of bedrock, landforms, rivers, geology, paleontology and urbanisation of the U.S. state of Iowa. The state covers an area of 56,272.81 sq mi (145,746 km 2 ).
The following table is a list of all 50 states and their respective dates of statehood. The first 13 became states in July 1776 upon agreeing to the United States Declaration of Independence, and each joined the first Union of states between 1777 and 1781, upon ratifying the Articles of Confederation, its first constitution. [6]
The Ogallala Aquifer (oh-gə-LAH-lə) is a shallow water table aquifer surrounded by sand, silt, clay, and gravel located beneath the Great Plains in the United States. As one of the world's largest aquifers, it underlies an area of approximately 174,000 sq mi (450,000 km 2) in portions of eight states (South Dakota, Nebraska, Wyoming, Colorado, Kansas, Oklahoma, New Mexico, and Texas). [1]
Topsoil runoff from farm, central Iowa (2011). Water pollution in the United States is a growing problem that became critical in the 19th century with the development of mechanized agriculture, mining, and industry, although laws and regulations introduced in the late 20th century have improved water quality in many water bodies. [1]
Iowa had enough sub-soil moisture that farmers were able to produce a bountiful yield last fall with timely rains, said Don Roose, president of Iowa-based U.S. Commodities. "This year, we're ...