plural of population biologist

(biology, ecology) The study of populations of organisms, especially the growth and regulation of population sizes and genetics, and the effects of interactions between species.

plural of population density

(physics) The creation of a system in which more atoms or molecules are in an excited state than in a ground state.

A sudden (normally temporary) decrease in a population typically due to a stressful situation

(law) A process in which the major political parties compete with each other to be tough on crime.

Synonym of penal populism

A graphical illustration of the distribution of a population (typically that of a country or region of the world) by age groups and sex; it typically forms the shape of a pyramid when the population is growing.

A population that is inferred to have existed based on data that has been reconstructed rather than on direct sampling.

plural of ghost population