Population size
Describes the number of individual organisms present in a given population at a given time
Population density
The number of individuals within a population per unit area
Population distribution
Sometimes callled population dispersion, describes how organisms are arranged within an area
Age structure
Describes the relative numbers of organisms of each age within a population
Age structure diagrams
They are visual tools scientists use to show the age structure of populations
Sex ration
Its proportion of males to females
Random distribution
Individual organisms are arranged within a space with no pattern
Uniform distribution
One individual organism are evenly spaced throughout an area
Clumped distribution
Individual organisms arrange themselves according to the availability of the resources the need to survive
