Which of the following best describes a density-independent factor that controls population size? (0:45)
Reduced availability of habitat
Occurrences of droughts and flooding
Competition for resources like food and water
Infectious disease transmission
Using the data from the table, which of the following is the growth rate for China in 2019 ? (1:16)
0.38%
0.49%
0.60%
0.68%
Which of the following calculation methods would determine the percent change in the crude birth rate from 1994 to 2019? (1:58)
(17.6−11.9) × 100
(11.9−17.6)/17.6 × 100
(11.9/17.6) × 100
(17.6 + 11.9)/17.6 × 100
The total fertility rate in country A was 6.8 in 1980. Which of the following statements best supports the change in the total fertility rate in country A between 1980 and 2015? (2:45)
The total fertility rate decreased as a result of a delay in age of first marriage and increased contraceptive use.
The total fertility rate decreased as a result of increased infant mortality rate.
The total fertility rate remained constant even though there was improved access to clean water.
The total fertility rate increased as a result of improved health care and better nutrition.
Which of the following countries has achieved replacement-level fertility? (3:14)