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In the United Kingdom, the county lines drug supply model is the practice of trafficking drugs into rural areas and smaller towns, away from major cities. [ 1 ] [ 2 ] Criminal gangs recruit and exploit vulnerable children, sometimes including children in pupil referral units and those who have been excluded from school , and exploit them to ...
An operational taxonomic unit (OTU) is an operational definition used to classify groups of closely related individuals.The term was originally introduced in 1963 by Robert R. Sokal and Peter H. A. Sneath in the context of numerical taxonomy, where an "operational taxonomic unit" is simply the group of organisms currently being studied. [1]
County lines can mean: Borders between counties; County lines drug trafficking, the practice of trafficking drugs into rural areas and smaller towns in the United ...
Systematic biology (hereafter called simply systematics) is the field that (a) provides scientific names for organisms, (b) describes them, (c) preserves collections of them, (d) provides classifications for the organisms, keys for their identification, and data on their distributions, (e) investigates their evolutionary histories, and (f ...
Biogeography now incorporates many different fields including but not limited to physical geography, geology, botany and plant biology, zoology, general biology, and modelling. A biogeographer's main focus is on how the environment and humans affect the distribution of species as well as other manifestations of Life such as species or genetic ...
A county line is the border between two counties. County Line, County line, or County lines may also refer to: County Line Branch, a stream in Pennsylvania, United States; County Line (High Valley album) County Line (Southern Pacific album) "County Line" (song) County Line; County Line, Alabama; County Line, Arkansas; County Line, Wisconsin
An evolutionarily significant unit (ESU) is a population of organisms that is considered distinct for purposes of conservation. Delineating ESUs is important when considering conservation action. An ESU is not always equivalent to a biological species but can be also a subspecies, variety, geographic race, or population.
A unit of selection is a biological entity within the hierarchy of biological organization (for example, an entity such as: a self-replicating molecule, a gene, a cell, an organism, a group, or a species) that is subject to natural selection. There is debate among evolutionary biologists about the extent to which evolution has been shaped by ...