Which of the following has been less influential than the others in raising our life expectancy?
A) Better public sanitation
B) Increased immunization
C) New medical innovation
D) More milk pasteurization
Question 2
Which of these is correct about relationships between statistics for mortality rates and life expectancy?
A) Infant mortality rates decrease average life expectancy for the population more than adult or elderly mortality rates.
B) Mortality rates increase as adults become older, but causes of death for the elderly are not higher than overall causes.
C) Elderly mortality rates decrease average life expectancy for the population more than infant or child mortality rates.
D) Although mortality rates are higher for elderly than younger adults, causes of death are similar for both groups.
Cell division in common life cycles
Phylogeny of the three domains of life
Life Table
Paul Cézanne, Still Life with Cherries and Peaches.
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Half-life explained