The maximum number refers to the highest possible quantity or limit of something. In AP Human Geography, it specifically relates to the largest number of individuals that can be sustained by a particular environment.
Related terms
Carrying capacity: Refers to the maximum population size that an ecosystem can sustainably support.
Population density: Describes the number of individuals living within a defined area.
Limiting factors: Factors such as food availability, disease, or competition that restrict the growth or survival of a population in an environment.