Unit 3 Test Flashcards
The CBR & CDR are the number of births or deaths per ____ people?
1000
In the demographic transition model, stage two is characterized by?
High birthrate and reduced death rate
The correct order of the stages is?
Pre-industrial, transitioning, industrial, post-industrial
In developed countries, replacement-level fertility rate is about?
2.1
The two major indicators of development are?
Infant mortality rate & life expectancy
Which curve is Type I?
A
R-selected species characteristics include?
Short lifespans, little to no parental care
All are characteristics of K-strategies except
Niche generalists
Type 1 survivorship indicates which type of reproductive strategy?
K-selected
The natural rate of increase is represented by?
Exponential growth
Populations going through demographic transition go through a period of expansion but stabilize?
With a larger population but zero growth
The doubling time of a population
Is a function of exponential growth
Decreased death rate and accelerated rate of human population growth are NOT related to
Increase in family planning and education for girls
Which is not a density-dependent factor that affects population size?
Weather
Which factors indicate a rapidly growing population?
A low infant mortality rate & a high percentage of girls with little education
The number of children an average woman would have over her full reproductive lifetime?
TFR
Why is the US population growing if the total fertility rate is below replacement level?
Immigration
For the forseeable future, which types of countries will see the greatest increases in population number?
Countries that are the poorest and least able to support population growth
What does it mean for TFR to be 2.1?
A value that two children plus a fraction to compensate for the death of offspring will replace the average male & female in the population
What does a TFR of 2.1 mean?
Zero population growth (ZPG)
What is a scientist observing when he/she examines the proportion of males and females in a population
Sex ratio 1:1
What species does an insect that reproduces rapidly belong to
R-selected species
When birth rates decline, what happens?
The average age of the population grows older since population shifts towards the elderly
What is the total fertility rate
Average number of children born per woman in her lifetime for a given population