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United States Department of Agriculture
United States Department of Agriculture federal executive department established in 1862, whose head was made a cabinet member in 1889. The department administers federal programs related to food production and rural life. The department's principal duty is to aid farmers, but it also serves... Read more |
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credit
credit granting of goods, services, or money in return for a promise of future payment. Most credit is accompanied by an interest charge, which usually makes the future payment greater than an immediate payment would have been. The credit system is founded upon the lender's confidence in the... Read more |
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Predation
Predation Predation is the interaction in which the predator attacks live prey and consumes it. The interaction can be between two or more individuals, and is to the benefit of the predator and at the expense of the prey. The study of predator-prey interactions is broad and ... Read more |
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DEMAND
DEMAND The concept of demand is not Freudian. It was developed by Jacques Lacan, who linked it with need and desire (Lacan, 1966, 1991). Demand is identifiable by the five clinical traits that constitute it, by the status that it gives the object, by its function in relation to the Other, and... Read more |
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rickets
rickets or rachitis , bone disease caused by a deficiency of vitamin D or calcium. Essential in regulating calcium and phosphorus absorption by the body, vitamin D can be formed in the skin by ultraviolet rays contained in sunlight; it can also be consumed in such foods as fish oils, eggs, and... Read more |
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Nucleic acid synthesis
BIOCHEMISTRY BIOCHEMISTRY, the chemical investigation and explanation of biological processes. American biochemistry acquired its institutional base as a result of the medical reform movement during the Progressive Era and was characterized until World War II by its emphasis on applied research... Read more |
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fluoridation
fluoridation , process of adding a fluoride to the water supply of a community to preserve the teeth of the inhabitants. Tooth enamel ordinarily contains small amounts of fluorides and when the amount is augmented through the intake of fluoridated water, especially during the first eight years of... Read more |
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Gaia Hypothesis
Gaia hypothesis The Gaia (pronounced GAY-ah) hypothesis is the idea that Earth is a living organism and can regulate its own environment. This idea argues that Earth is able to maintain conditions that are favorable for life to survive on it, and that it is the living things on Earth that give the... Read more |
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water supply
water supply process or activity by which water is provided for some use, e.g., to a home, factory, or business. The term may also refer to the supply of water provided in this way. In the United States, the average residential daily water supply demand is 100 gal (380 liters) per person, although... Read more |
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Water circulation
HYDROLOGY CONCEPT Hydrology is among the principal disciplines within the larger framework of hydrologic sciences, itself a subcategory of earth sciences study. Of particular importance to hydrology is the hydrologic cycle by which water is circulated through various earth... Read more |
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