The number of individuals in a population occupying a definite area is called population density. It is typically expressed as the number of individuals per unit area or volume, providing insight into how crowded or dispersed a population is within a specific habitat. Understanding population density is crucial for studying ecological dynamics and resource management.
The number of individuals in the population is the population's size. If a population is small enough you will be able to determine the size by counting the individuals.
Population
population
Population :)
Emigration.
immigration
The group of individuals used to represent a population is called the sample. It should have the same statistics as the population, though be of a smaller size.
Over population.
Moving out of a population is called emigration. (Moving into a population is called immigration.)
dispersion
genetic variation
emigration