Chapter 5 Test Flashcards
What are the four things to consider when studying populations?
Geographic range
Density & distribution
Growth rate
Age structure
The range or area inhabited by the organism
Geographic range
The number of individuals per unit area
Population density
How individuals are spaced out across a range
Population distribution
Group of organisms of the same species living in a given area
Population
Determines the change in size of the population
Growth rate
Number of males and females of each age in a population
Age structure
Forms a j shaped growth curve
Starts slowly due to the lag time required for sexual maturity
Occurs under ideal conditions with unlimited resources
Exponential Growth
Initial rapid growth that slows and reaches a level of stability
Starts like exponential growth but then resources become limited
Logistic growth
What 3 things impact human population growth?
Harsh economy
Low food supply
Disease
How can death rates decrease?
Improved nutrition
Sanitation
Medicine
Health care
When did exponential growth slow down?
Twentieth century
Study of human population and the changes that undergo overtime
Demography
A dramatic change from high to birth rates and death rates to low ones
Demographic transitions
