The human population's life expectancy has increased significantly but seems to have an upper limit. Which of the following might be described as an ecological consequence of passing that upper limit by regulating cell death?
A) an increase in the relative frequency of deaths from cancer
B) an increased need for gerontologists and other professionals to care for the elderly
C) an increase in the total population of humans on the planet
D) a decrease in the ratio of younger to older members of the population
E) a decrease in the birth rate
Human Memorabilia in Space
Percentage of Foreign-Born Whites and Native Whites of Foreign or Mixed Parentage in Total Populatio
The proportion of U.S. adults in the workforce has increased slightly for older age groups over the ...
A karyogram of the human chromosome set, showing the distinctive banding pattern of each chromosome.
Occurrence of Barr bodies in various human karyotypes
Structure and function of human teeth.