How Railroads are Made
نویسندگان
چکیده
منابع مشابه
How Fertilizer Recommendations Are Made
Recommendation, as we use the word here, means advice from a soil or crop specialist to those deciding how much of, what form of, and when to apply a fertilizer to a soil to benefit growth of a plant or crop. Recommendations of fertilizers and soil amendments must consider the interactions of all the factors discussed in this manual, including the soil, the crop, the climate, the beneficial eff...
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Citation: Sabelli PA and Larkins BA (2015) New insights into how seeds are made. It is difficult to overstate the importance of seeds for the evolutionary success of the spermato-phytes and the development of human cultures and their survival. For hundreds of millions of years since their appearance in the Devonian period, seed plants have colonized many environments , thanks in part to several...
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Aaron M. Griffith Identifying plausible truthmakers for negative truths has been a serious and perennial problem for truthmaker theory. I argue here that negative truths (in particular contingent negative existential truths) are indeed made true but not in the way that positive truths are. I rely on a distinction between “existence-independence” and “variation-independence” drawn by Hofmann and...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1870
ISSN: 0036-8733
DOI: 10.1038/scientificamerican10151870-245