9.2 SG Flashcards
What are the three primary factors that determine population growth?
Birth rate, death rate, and immigration.
True or False: Immigration only contributes to population decrease.
False.
Fill in the blank: The rate of __________ is the difference between the number of births and deaths in a population.
natural increase.
What is the term for population growth that is limited by environmental factors as population density increases?
Density-dependent growth.
Multiple Choice: Which of the following is an example of a density-independent factor? A) Disease B) Natural disasters C) Competition
B) Natural disasters.
What is the definition of birth rate?
The number of live births per 1,000 people in a population per year.
True or False: Density-dependent factors have a greater effect on population size as density increases.
True.
What does the term ‘carrying capacity’ refer to?
The maximum population size that an environment can sustain indefinitely.
Fill in the blank: __________ is the movement of individuals into a population from other areas.
Immigration.
What is the relationship between population density and competition for resources?
As population density increases, competition for resources also increases.
Multiple Choice: Which factor is NOT density-dependent? A) Food supply B) Predation C) Weather
C) Weather.
What is the effect of high death rates on population growth?
High death rates lead to a decrease in population growth.
True or False: Birth rates are typically higher in developed countries than in developing countries.
False.
What is the primary effect of immigration on population size?
It increases population size.
Fill in the blank: __________ factors, such as food and space, are influenced by population density.
Density-dependent.
