منابع مشابه
Heredity and Variation
Students often do not understand the critical role of variation to evolutionary processes. In fact, variation is the only fundamental requirement for evolution to occur. Natural selection is often erroneously perceived to have this role; however, natural selection is a mechanism of evolution (one of several), while variation is a prerequisite for evolution. In other words, there can be evolutio...
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all the humdrum of mental undressing, dressing, shaving, etc., there is the chance reward of being confidential ear to what may never be so well expressed or thought of again. The contributors of the "relatively brief" presentations are six in number. Alex Bavelas talks on "Communication patterns in problem-solving groups"; Ivor A. Richards, on "Communication between men: Meaning and language";...
متن کاملMicro-organisms in gastroenteritis.
We present bacteriological and virological findings together with salient clinical features from a prospective study of 447 children aged under 2 years admitted to hospital with infectious gastroenteritis. Putative pathogenic micro-organisms were identified in the stools of 75% of these children. Eight identifiably distinct groups of viruses, found on electron microscopy and tissue culture were...
متن کامل: metadiscourse in introduction sections of applied linguistics and physics research articles: exploring variation in frequency and type
abstract in written mode of language, metadiscourse markers are used commonly to help writers in general and academic writers in particular to produce coherent and professional texts. the purpose of the present study was to compare introduction sections of applied linguistics and physics articles regarding their use of interactive and interactional metadiscourse markers based on the model pro...
15 صفحه اولGenomic Complexity in Micro Organisms and Digital Organisms
For years, my group has used microorganisms as models to address fundamental hypotheses about the mechanisms and dynamics of genetic, ecological, and evolutionary processes [1-4]. In these fields, there are many interacting entities and hence a tremendous number of potential interactions. Identifying general rules, if any, that govern the form of these interactions might be important for develo...
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ژورنال
عنوان ژورنال: Nature
سال: 1946
ISSN: 0028-0836,1476-4687
DOI: 10.1038/158363a0