Sentence examples for population change over time from inspiring English sources

On the "semantic approach" to the theory of natural selection, each of the substitution instances of the schematic principle of natural selection generated by a particular specification of the propensity definition of fitness is treated as a definition of a different Darwinian system of population change over time.

First, the modern theory of evolution, both that allele frequencies in a population change over time and that descent with modification has occurred among the Earth's biota, in no way rests on the existence or non-existence of extraterrestrial life.

As this is an ongoing study, the characteristics of the population change over time.

The resident population module shows births, deaths, immigration, and emigration as the four determinants of population change over time.

The health care needs of a given population change over time, responding to demographic, economic, social, technological and environmental trends as well as access to health services, including health education [ 3, 4].

Early studies on population change over time were overviewed from a demographic rather than epidemiological perspective (1), including Thompson's early work observing changes in fertility and mortality rates in populations (2).

Team members calculated expected revenue, then expenditures, then devised mathematical functions that would model income and population changes over time, economic growth and other factors.

Other research looks at entire populations of organizations, using statistical tools to see how a population changes over time as some organizations flourish and others die.

Why do trees die in cities? Understanding the urban tree mortality process is critical to planning for cycles of tree removal and replacement, modeling tree population changes over time, and accurately predicting ecosystem services provided by urban forests.

It is difficult to discern population changes over time due to strenuous access to most nesting colonies, inadequate survey efforts, and lack of longevity of observations at most Black Swift breeding colonies.

The average number of offspring left by a female at each age together with the proportion of individuals surviving to each age can be used to evaluate the rate at which the size of the population changes over time.