The hikers were issued with an on-the-spot fine for littering.
Since all tissues are potentially subject to carcinogenesis the existence of higher organisms would in general be impossible if the conversion of a normal cell into a cancerous one could take place as a result of a single mutation; even if carcinogenesis was caused by the mutation of only one out of ten thousand loci of a chromosome, still, in the organism, there would be a million or milliardfold opportunity for a cancerous tumour to arise.
Within the framework of a distinction between grammatical and lexical aspect, the category grammatical aspect, which is usually realized in the morphology of the verb, includes the imperfective and the perfective aspect, whereas the lexical aspect concerns the situation types (Aktionsarten) of the verb, i.e. it is inherent to the semantics of the verb.
You can't overnight turn everyone into an expert on everything. ….
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