Dificultati in definirea termenului de specii in biologie
Difficulties in defining the Species term in Biology

Summary/Abstract: In the long history of origin and evolution of life on Earth beings were deeply differentiated according to their behaviour and biology. In each biogeographically area there are some dominant species, with largest distribution, most frequently met. But inside the same species, usually there is an unexpectedly variability and these variation in time can lead to new and different species with divergent characters. This is why the topic of biological species still opens controversial debates. The aim of this article is to consider older references to the species term and to recall that biological species is fundamental concept in the natural history.

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