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11Natural uranium — (NU) refers to refined uranium with the same isotopic ratio as found in nature. It contains 0.7 % uranium 235, 99.3 % uranium 238, and a trace of uranium 234 by weight. In terms of the amount of radioactivity, approximately 2.2 %… …
12Natural History of an Alien — Format Speculative fiction/Sci Fi Starring Various astronomers and scientists Country of origin …
13Natural rubber — Rubber and India rubber redirect here. For other uses, see Rubber (disambiguation). This article is about the polymeric material natural rubber. For man made rubber materials, see Synthetic rubber. Latex being collected from a tapped rubber tree …
14Weight — This article is about the physical concept. For other uses, see Weight (disambiguation). A spring scale measures the weight of an object (according to the operational definition) …
15Natural law — For other uses, see Natural law (disambiguation). Natural law, or the law of nature (Latin: lex naturalis), is any system of law which is purportedly determined by nature, and thus universal.[1] Classically, natural law refers to the use of… …
16Natural gas — For other uses, see Natural gas (disambiguation). Natural gas extraction by countries in cubic meters per year. Natural gas is a naturally occurring gas mixture consisting primarily of methane, typically with 0–20% higher hydrocarbons[1] …
17Natural phenol — Quercetin, a typical flavonoid, is a natural phenol Natural phenols, bioavailable phenols, plant phenolics, low molecular weight phenols or phenoloids[1][2] …
18Weight training — This article is about strength training using weight (gravity) to generate resistance to contraction. For basic principles on increasing the strength of muscles, see strength training. A complete weight training workout can be performed with a… …
19Natural gas vehicle — NGV redirects here. For the art gallery in Melbourne, Australia, see National Gallery of Victoria. Fueling (Fiat Multipla) …
20Natural foods — The term natural is applied to many foods, but does not have a consistent meaning. Natural foods and all natural foods are widely used terms in food labeling and marketing with a variety of definitions, some of which are vague. The term is… …
