Question

The science that describes populations is called _____. gerontology psychology demography geography

Answer 1

 Answer: demography

We can identify which of the scientific studies describe population thru their definitions.

Gerontology is particular with old age, its process and the problems are encountered by old people.

Psychology studies the feeling, behavior, and mind of people, including all phenomena.

Demography shows the structure of human population, how it changes, based on the statistics of births, deaths, income, or occurrence of disease, the composition of a particular human population.

Geography is understanding of the Earth.  And it's complexities.

Correct answer then is demography.

Answer 2

The science that describes populations is called Demography.
Demography is the study of human population dynamics. It entails the study of the size  and density, distribution, and vital statistics such as births, marriages, deaths, aging, migration among other factors that affect a population. In other term is the Quantitive and qualitative aspects of human population.