'layers of population' is a grammatically correct phrase and can be used in written English.
It refers to the different levels or groups within a population. Example: The city's population was divided into distinct layers - the wealthy elite, the middle class, and the struggling lower class.
Each year another layer of population, and new consumers, adds on to a trade-based free market and in the process creates potential for new wealth.
Population genetic cluster analyses revealed a further layer of population divergence with six distinct genotypic clusters.
For large R 0 in fact, the local epidemics - in census areas for GLEaM, and in households/workplaces in the agent-based model - become more widespread across all the layers of the population and thus the differences in the population structure are less relevant.
Probably the major advantage of urine as a non-invasively collected matrix is the ease with which repeated sampling can be performed without major ethical or practical limitations across all layers of the population, including babies, young children and other susceptible populations.
The specific form focuses on disparities in income among layers of the population.
Perhaps that is why broad layers of the population share the view that the police and the army are not in the city to fight the drug traffic but rather to help one drug cartel against another.
It's quite an interesting moment in that respect: Architecture is more recognized than ever, by many more layers of the population, but that doesn't lead necessarily to architects being employed.
The rally — which was addressed by well-known journalists, TV presenters, writers and politicians — opened with a provocative song, "Our madhouse is voting for Putin," a clear suggestion that the authorities had done everything to possible to get even the most passive layers of the population out to vote for them.
New Forum made a great effort to bring very wide layers of the population in behind it.
More methodological and longitudinal studies are needed to determine the prevalence and associated factors for OCD in different age groups from various layers of the population.
By far the most advantageous property of non-invasively collected matrices is that repeated sampling, even in susceptible populations, poses a much lower stress on the participants and allows for a much wider inclusion of all layers of the population.
