Discussion
Specific mortality of members of a population is expressed by
Answer: B
The official key gives the survivorship curve as the expression of the mortality of the members of a population at each age. The curve plots the number of survivors against age, and the drop in the curve at any age shows the specific mortality at that age.
A life table lists the numbers surviving and dying by age class and is the tabular source of the curve. The rate of mortality is a single overall measure and the rate of fecundity concerns reproduction, not death. The key accepts option B.
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