Populations Chapter 5 Unit 2

Characteristics of Populations Geographic Distribution Population Density Growth Rate

Factors that affect Population Growth Births Deaths Individuals that enter or leave the population Immigration Emigration

Exponential Growth reproduce at a constant rate with unlimited resources, a population will grow exponentially

Logistic Growth Growth slows or stops resources become less available Carrying capacity

Limiting Factors causes population growth to decrease Density Dependent Factors Become limiting only when the population density reaches a certain level

Density Independent Factors: Affects all populations in similar ways, regardless of the population size