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Agriculture is the cultivation of animals, plants, fungi and other life forms for food, fiber, and other products used to sustain life. Agriculture was the key implement in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that nurtured the development of civilization. The study of agriculture is known as agricultural science. The history of agriculture dates back thousands of years, and its development has been driven and defined by greatly different climates, cultures, and technologies. However, all farming generally relies on techniques to expand and maintain the lands suitable for raising domesticated species. For plants, this usually requires some form of irrigation, although there are methods of dryland farming; pastoral herding on rangeland is still the most common means of raising livestock. In the developed world, industrial agriculture based on large-scale monoculture has become the dominant system of modern farming, although there is growing support for sustainable agriculture. The major agricultural products can be broadly grouped into foods, fibers, fuels, and raw materials.
The domestic pig (also swine, in some areas hog) is a domesticated animal that traces its ancestry to the wild boar, and is considered a subspecies of the wild boar or a distinct species in its own right. It is likely the wild boar was domesticated as early as 13,000 BC in the Tigris River basin. Pigs are farmed for the consumption of their flesh, but some cultures have religious dietary laws that forbid the consumption of pig meat. The animal's bones, hide, and bristles have been fashioned into items for human use such as brushes, and pigs have been kept as pets, especially the pot bellied pig. Miss Piggy, Babe, and Porky the Pig represent the domestic pig in entertainment and "The Three Little Pigs", Charlotte's Web, and The Sheep-Pig are prominent examples of the domestic pig in literature.
Most domestic pigs have rather sparse hair covering on their skin, although woolly coated breeds, such as the Mangalitsa, are raised. Archaeological evidence suggests that pigs were domesticated from wild boar as early as 13,000–12,700 BC in the Near East in the Tigris Basin being managed in the wild in a way similar to the way they are managed by some modern New Guineans. Remains of pigs have been dated to earlier than 11,400 BC in Cyprus that must have been introduced from the mainland which suggests domestication in the adjacent mainland by then. There was also a separate domestication in China.
Sustainable agriculture is the practice of farming using principles of ecology, the study of relationships between organisms and their environment. It has been defined as "an integrated system of plant and animal production practices having a site-specific application that will last over the long term:
Sustainable agriculture in the United States was addressed by the 1990 farm bill. More recently, as consumer and retail demand for sustainable products has risen, organizations such as Food Alliance and Protected Harvest have started to provide measurement standards and certification programs for what constitutes a sustainably grown crop.
Categories: Sustainable agriculture, Sustainability
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