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Language convergence is a type of linguistic change in which languages come to resemble one another structurally as a result of prolonged language contact and mutual interference, regardless of whether those languages belong to the same language family, i.e. stem from a common genealogical proto-language. [1]
A mix-up rated as contamination could in reality be a simple confusion of two cell lines, but usually contamination is assumed. [ citation needed ] After a cell line has been discovered to be contaminated, it is usually never used again for research demanding the specific type of cell line they were assumed to be.
Genetic pollution is a term for uncontrolled [1] [2] gene flow into wild populations. It is defined as "the dispersal of contaminated altered genes from genetically engineered organisms to natural organisms, esp. by cross-pollination", [3] but has come to be used in some broader ways.
Among 818 ports in the Pacific region, Singapore alone accounts for an estimated of 26 percent of cross-region (long range) species exchange. Via targeted ballast management on Singapore and a few other "influential" ports, cross-region species exchange to/from the Pacific region can be combinatorially reduced. [3]
Within the sciences, the word "contamination" can take on a variety of subtle differences in meaning, whether the contaminant is a solid or a liquid, [3] as well as the variance of environment the contaminant is found to be in. [2] A contaminant may even be more abstract, as in the case of an unwanted energy source that may interfere with a process. [2]
2013 aflatoxin contamination – Contamination with aflatoxins results in a milk recall in Europe and a dog food recall in the United States in February and March. 2013, May – A Chinese crime ring was found to have passed off rat, mink, and small mammal meat as mutton for more than 1 million USD in Shanghai and Jiangsu province markets. [79]
Food contamination, the presence in food of harmful chemicals or microorganisms that might cause illness; 2008 Irish pork contamination, dioxin contamination of pork products produced in Ireland in 2008; Food contamination in China, a chronology of food contamination and safety incidents in China from 2003 to 2014