Population - online puzzles

In biology, a population is all the organisms of the same group or species, which live in a particular geographical area, and have the capability of interbreeding. The area that is used to define a sexual population is defined as the area where inter-breeding is potentially possible between any pair within the area, and where the probability of interbreeding is greater than the probability of cross -breeding with individuals from other areas.

In sociology, population refers to a collection of humans. Demography is a social science which entails the statistical study of human populations. Population in simpler terms is the number of people in a city or town, region, country or world ; population is usually determined by a process called census (a process of collecting, analyzing, compiling and publishing data )

This article refers mainly to human population.